chore: Update discovery artifacts (#1375)

## Deleted keys were detected in the following stable discovery artifacts:
servicenetworking v1 https://github.com/googleapis/google-api-python-client/commit/c0ad756013c602597e477bc0e22e7b2771689214

## Deleted keys were detected in the following pre-stable discovery artifacts:
retail v2alpha https://github.com/googleapis/google-api-python-client/commit/c9d7a149295d827110c789e464b4f97edc13cbaa
servicenetworking v1beta https://github.com/googleapis/google-api-python-client/commit/c0ad756013c602597e477bc0e22e7b2771689214

## Discovery Artifact Change Summary:
feat(composer): update the api https://github.com/googleapis/google-api-python-client/commit/c2cb2746320fa7b6c1536028794f53576c0f1ddd
feat(compute): update the api https://github.com/googleapis/google-api-python-client/commit/2cdcd0a21223a229e711778a3cf1b38c63521d96
feat(dfareporting): update the api https://github.com/googleapis/google-api-python-client/commit/73f7d790e1585322547fe7cb39c8f36e7b400121
feat(dialogflow): update the api https://github.com/googleapis/google-api-python-client/commit/8edd852f294eaccfa6a0e7288d54a2d751f53506
feat(retail): update the api https://github.com/googleapis/google-api-python-client/commit/c9d7a149295d827110c789e464b4f97edc13cbaa
feat(sasportal): update the api https://github.com/googleapis/google-api-python-client/commit/12683cabbf8deaf0a884147b98c30345786874a6
feat(servicenetworking): update the api https://github.com/googleapis/google-api-python-client/commit/c0ad756013c602597e477bc0e22e7b2771689214
diff --git a/docs/dyn/compute_alpha.nodeGroups.html b/docs/dyn/compute_alpha.nodeGroups.html
index 0cde3ec..f6a3309 100644
--- a/docs/dyn/compute_alpha.nodeGroups.html
+++ b/docs/dyn/compute_alpha.nodeGroups.html
@@ -270,6 +270,12 @@
           "nodeTemplate": "A String", # URL of the node template to create the node group from.
           "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
           "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
+          "shareSettings": { # The share setting for reservations and sole tenancy node groups. # Share-settings for the node group
+            "projects": [ # A List of Project names to specify consumer projects for this shared-reservation. This is only valid when share_type's value is SPECIFIC_PROJECTS.
+              "A String",
+            ],
+            "shareType": "A String", # Type of sharing for this shared-reservation
+          },
           "size": 42, # [Output Only] The total number of nodes in the node group.
           "status": "A String",
           "zone": "A String", # [Output Only] The name of the zone where the node group resides, such as us-central1-a.
@@ -533,6 +539,12 @@
   "nodeTemplate": "A String", # URL of the node template to create the node group from.
   "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
   "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
+  "shareSettings": { # The share setting for reservations and sole tenancy node groups. # Share-settings for the node group
+    "projects": [ # A List of Project names to specify consumer projects for this shared-reservation. This is only valid when share_type's value is SPECIFIC_PROJECTS.
+      "A String",
+    ],
+    "shareType": "A String", # Type of sharing for this shared-reservation
+  },
   "size": 42, # [Output Only] The total number of nodes in the node group.
   "status": "A String",
   "zone": "A String", # [Output Only] The name of the zone where the node group resides, such as us-central1-a.
@@ -774,6 +786,12 @@
   "nodeTemplate": "A String", # URL of the node template to create the node group from.
   "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
   "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
+  "shareSettings": { # The share setting for reservations and sole tenancy node groups. # Share-settings for the node group
+    "projects": [ # A List of Project names to specify consumer projects for this shared-reservation. This is only valid when share_type's value is SPECIFIC_PROJECTS.
+      "A String",
+    ],
+    "shareType": "A String", # Type of sharing for this shared-reservation
+  },
   "size": 42, # [Output Only] The total number of nodes in the node group.
   "status": "A String",
   "zone": "A String", # [Output Only] The name of the zone where the node group resides, such as us-central1-a.
@@ -906,6 +924,12 @@
       "nodeTemplate": "A String", # URL of the node template to create the node group from.
       "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
       "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
+      "shareSettings": { # The share setting for reservations and sole tenancy node groups. # Share-settings for the node group
+        "projects": [ # A List of Project names to specify consumer projects for this shared-reservation. This is only valid when share_type's value is SPECIFIC_PROJECTS.
+          "A String",
+        ],
+        "shareType": "A String", # Type of sharing for this shared-reservation
+      },
       "size": 42, # [Output Only] The total number of nodes in the node group.
       "status": "A String",
       "zone": "A String", # [Output Only] The name of the zone where the node group resides, such as us-central1-a.
@@ -1069,6 +1093,12 @@
   "nodeTemplate": "A String", # URL of the node template to create the node group from.
   "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
   "selfLinkWithId": "A String", # [Output Only] Server-defined URL for this resource with the resource id.
+  "shareSettings": { # The share setting for reservations and sole tenancy node groups. # Share-settings for the node group
+    "projects": [ # A List of Project names to specify consumer projects for this shared-reservation. This is only valid when share_type's value is SPECIFIC_PROJECTS.
+      "A String",
+    ],
+    "shareType": "A String", # Type of sharing for this shared-reservation
+  },
   "size": 42, # [Output Only] The total number of nodes in the node group.
   "status": "A String",
   "zone": "A String", # [Output Only] The name of the zone where the node group resides, such as us-central1-a.