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_beta.regionInstances.html b/docs/dyn/compute_beta.regionInstances.html
index e6721f3..91c821e 100644
--- a/docs/dyn/compute_beta.regionInstances.html
+++ b/docs/dyn/compute_beta.regionInstances.html
@@ -359,7 +359,7 @@
     "reservationAffinity": { # Specifies the reservations that this instance can consume from. # Specifies the reservations that instances can consume from.
       "consumeReservationType": "A String", # Specifies the type of reservation from which this instance can consume resources: ANY_RESERVATION (default), SPECIFIC_RESERVATION, or NO_RESERVATION. See  Consuming reserved instances for examples.
       "key": "A String", # Corresponds to the label key of a reservation resource. To target a SPECIFIC_RESERVATION by name, specify googleapis.com/reservation-name as the key and specify the name of your reservation as its value.
-      "values": [ # Corresponds to the label values of a reservation resource.
+      "values": [ # Corresponds to the label values of a reservation resource. This can be either a name to a reservation in the same project or "projects/different-project/reservations/some-reservation-name" to target a shared reservation in the same zone but in a different project.
         "A String",
       ],
     },
@@ -370,6 +370,7 @@
       "automaticRestart": True or False, # Specifies whether the instance should be automatically restarted if it is terminated by Compute Engine (not terminated by a user). You can only set the automatic restart option for standard instances. Preemptible instances cannot be automatically restarted.
           #
           # By default, this is set to true so an instance is automatically restarted if it is terminated by Compute Engine.
+      "hostErrorTimeoutSeconds": 42, # Specify the time in seconds for host error detection, the value must be within the range of [90, 330] with the increment of 30, if unset, the default behavior of host error recovery will be used.
       "locationHint": "A String", # An opaque location hint used to place the instance close to other resources. This field is for use by internal tools that use the public API.
       "maintenanceFreezeDurationHours": 42, # Specifies the number of hours after VM instance creation where the VM won't be scheduled for maintenance.
       "maintenanceInterval": "A String", # For more information about maintenance intervals, see Setting maintenance intervals.