chore: Update discovery artifacts (#1328)

## Deleted keys were detected in the following stable discovery artifacts:
admindirectoryv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/1feda6f78f168e28d7842f49ad91fb00dc24ec19)
bigqueryreservationv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
doubleclickbidmanagerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
doubleclickbidmanagerv11[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
serviceconsumermanagementv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)

## Deleted keys were detected in the following pre-stable discovery artifacts:
bigqueryreservationv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computealpha[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computebeta[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
serviceconsumermanagementv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)

## Discovery Artifact Change Summary:
admindirectoryv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/1feda6f78f168e28d7842f49ad91fb00dc24ec19)
bigqueryreservationv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
bigqueryreservationv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/7e6c78d448e472caaa67971160fdd44ccce061b0)
computealpha[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computebeta[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
computev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/131a5cd5bda8512217aa461042b33fb287790839)
containerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/9bc4a12e7ab57a1b5a5d3637087b80b3008e3352)
containerv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/9bc4a12e7ab57a1b5a5d3637087b80b3008e3352)
doubleclickbidmanagerv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
doubleclickbidmanagerv11[ [More details]](https://github.com/googleapis/google-api-python-client/commit/d20e7e2553a1ea5d3690afba366683d4eb0ca647)
serviceconsumermanagementv1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceconsumermanagementv1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/864ef4795a0e89263859f493f9c40d1a85e90c28)
serviceusagev1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)
serviceusagev1beta1[ [More details]](https://github.com/googleapis/google-api-python-client/commit/ecd65a89c54132856b47747439faf901dbfbafcb)
diff --git a/docs/dyn/compute_beta.regionBackendServices.html b/docs/dyn/compute_beta.regionBackendServices.html
index dc44138..769778f 100644
--- a/docs/dyn/compute_beta.regionBackendServices.html
+++ b/docs/dyn/compute_beta.regionBackendServices.html
@@ -270,6 +270,12 @@
     ],
     "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
       "includeHost": True or False, # If true, requests to different hosts will be cached separately.
+      "includeHttpHeaders": [ # Allows HTTP request headers (by name) to be used in the cache key.
+        "A String",
+      ],
+      "includeNamedCookies": [ # Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.
+        "A String",
+      ],
       "includeProtocol": True or False, # If true, http and https requests will be cached separately.
       "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
       "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
@@ -485,7 +491,7 @@
       # When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
       #
       # Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.
-  "subsetting": { # Subsetting options to make L4 ILB support any number of backend instances
+  "subsetting": { # Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing and Internal HTTP(S) load balancing.
     "policy": "A String",
   },
   "timeoutSec": 42, # The backend service timeout has a different meaning depending on the type of load balancer. For more information see,  Backend service settings The default is 30 seconds. The full range of timeout values allowed is 1 - 2,147,483,647 seconds.
@@ -614,6 +620,12 @@
     ],
     "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
       "includeHost": True or False, # If true, requests to different hosts will be cached separately.
+      "includeHttpHeaders": [ # Allows HTTP request headers (by name) to be used in the cache key.
+        "A String",
+      ],
+      "includeNamedCookies": [ # Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.
+        "A String",
+      ],
       "includeProtocol": True or False, # If true, http and https requests will be cached separately.
       "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
       "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
@@ -829,7 +841,7 @@
       # When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
       # 
       # Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.
-  "subsetting": { # Subsetting options to make L4 ILB support any number of backend instances
+  "subsetting": { # Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing and Internal HTTP(S) load balancing.
     "policy": "A String",
   },
   "timeoutSec": 42, # The backend service timeout has a different meaning depending on the type of load balancer. For more information see,  Backend service settings The default is 30 seconds. The full range of timeout values allowed is 1 - 2,147,483,647 seconds.
@@ -1004,6 +1016,12 @@
         ],
         "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
           "includeHost": True or False, # If true, requests to different hosts will be cached separately.
+          "includeHttpHeaders": [ # Allows HTTP request headers (by name) to be used in the cache key.
+            "A String",
+          ],
+          "includeNamedCookies": [ # Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.
+            "A String",
+          ],
           "includeProtocol": True or False, # If true, http and https requests will be cached separately.
           "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
           "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
@@ -1219,7 +1237,7 @@
           # When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
           #
           # Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.
-      "subsetting": { # Subsetting options to make L4 ILB support any number of backend instances
+      "subsetting": { # Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing and Internal HTTP(S) load balancing.
         "policy": "A String",
       },
       "timeoutSec": 42, # The backend service timeout has a different meaning depending on the type of load balancer. For more information see,  Backend service settings The default is 30 seconds. The full range of timeout values allowed is 1 - 2,147,483,647 seconds.
@@ -1337,6 +1355,12 @@
     ],
     "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
       "includeHost": True or False, # If true, requests to different hosts will be cached separately.
+      "includeHttpHeaders": [ # Allows HTTP request headers (by name) to be used in the cache key.
+        "A String",
+      ],
+      "includeNamedCookies": [ # Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.
+        "A String",
+      ],
       "includeProtocol": True or False, # If true, http and https requests will be cached separately.
       "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
       "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
@@ -1552,7 +1576,7 @@
       # When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
       # 
       # Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.
-  "subsetting": { # Subsetting options to make L4 ILB support any number of backend instances
+  "subsetting": { # Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing and Internal HTTP(S) load balancing.
     "policy": "A String",
   },
   "timeoutSec": 42, # The backend service timeout has a different meaning depending on the type of load balancer. For more information see,  Backend service settings The default is 30 seconds. The full range of timeout values allowed is 1 - 2,147,483,647 seconds.
@@ -1737,6 +1761,12 @@
     ],
     "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
       "includeHost": True or False, # If true, requests to different hosts will be cached separately.
+      "includeHttpHeaders": [ # Allows HTTP request headers (by name) to be used in the cache key.
+        "A String",
+      ],
+      "includeNamedCookies": [ # Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.
+        "A String",
+      ],
       "includeProtocol": True or False, # If true, http and https requests will be cached separately.
       "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
       "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
@@ -1952,7 +1982,7 @@
       # When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
       # 
       # Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.
-  "subsetting": { # Subsetting options to make L4 ILB support any number of backend instances
+  "subsetting": { # Subsetting configuration for this BackendService. Currently this is applicable only for Internal TCP/UDP load balancing and Internal HTTP(S) load balancing.
     "policy": "A String",
   },
   "timeoutSec": 42, # The backend service timeout has a different meaning depending on the type of load balancer. For more information see,  Backend service settings The default is 30 seconds. The full range of timeout values allowed is 1 - 2,147,483,647 seconds.