feat(networkmanagement): add messages and fields related to Redis Ins…

…tances (#10995)

- [ ] Regenerate this pull request now.

feat(networkmanagement): add messages and fields related to Redis Clusters

feat(networkmanagement): add PSC network attachment URI to the InstanceInfo proto

feat(networkmanagement): add subnet URI and region name to the NetworkInfo proto

feat(networkmanagement): add firewall policy URI to the FirewallInfo proto

feat(networkmanagement): add fields related to advertised routes to the RouteInfo proto

feat(networkmanagement): add region name field to the RouteInfo proto

feat(networkmanagement): add region name to the ForwardingRuleInfo proto

feat(networkmanagement): add load balancer name to the ForwardingRuleInfo proto

feat(networkmanagement): add PSC target fields to the ForwardingRuleInfo proto

feat(networkmanagement): add more detailed abort and drop causes to corresponding enums

chore(networkmanagement): update Google API field annotations format

docs(networkmanagement): update outdated comments in the FirewallInfo proto
PiperOrigin-RevId: 686129238

Source-Link: https://togithub.com/googleapis/googleapis/commit/cab65d56577608266888c9800ba42c2bf4704805

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/cd5b0a24acc4c2824dcb0db4e969c3551a9470cf
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiY2Q1YjBhMjRhY2M0YzI4MjRkY2IwZGI0ZTk2OWMzNTUxYTk0NzBjZiJ9

internal/generated/snippets/networkmanagement/apiv1/snippet_metadata.google.cloud.networkmanagement.v1.json

@@ -656,7 +656,7 @@
     {
       "regionTag": "networkmanagement_v1_generated_ReachabilityService_UpdateConnectivityTest_sync",
       "title": "networkmanagement UpdateConnectivityTest Sample",
-      "description": "UpdateConnectivityTest updates the configuration of an existing `ConnectivityTest`.\nAfter you update a test, the reachability analysis is performed as part\nof the long running operation, which completes when the analysis completes.\nThe Reachability state in the test resource is updated with the new result.\n\nIf the endpoint specifications in `ConnectivityTest` are invalid\n(for example, they contain non-existent resources in the network, or the\nuser does not have read permissions to the network configurations of\nlisted projects), then the reachability result returns a value of\n<code>UNKNOWN</code>.\n\nIf the endpoint specifications in `ConnectivityTest` are incomplete, the\nreachability result returns a value of `AMBIGUOUS`. See the documentation\nin `ConnectivityTest` for for more details.",
+      "description": "UpdateConnectivityTest updates the configuration of an existing `ConnectivityTest`.\nAfter you update a test, the reachability analysis is performed as part\nof the long running operation, which completes when the analysis completes.\nThe Reachability state in the test resource is updated with the new result.\n\nIf the endpoint specifications in `ConnectivityTest` are invalid\n(for example, they contain non-existent resources in the network, or the\nuser does not have read permissions to the network configurations of\nlisted projects), then the reachability result returns a value of\n<code>UNKNOWN</code>.\n\nIf the endpoint specifications in `ConnectivityTest` are incomplete, the\nreachability result returns a value of `AMBIGUOUS`. See the documentation\nin `ConnectivityTest` for more details.",
       "file": "ReachabilityClient/UpdateConnectivityTest/main.go",
       "language": "GO",
       "clientMethod": {