feat(networkconnectivity): update the api

#### networkconnectivity:v1

The following keys were added:
- schemas.RoutingVPC.properties.requiredForNewSiteToSiteDataTransferSpokes (Total Keys: 2)

Author: yoshi-automation

Diff for: docs/dyn/networkconnectivity_v1.projects.locations.global_.hubs.html

@@ -128,6 +128,7 @@ <h3>Method Details</h3>
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The name of the hub. Hub names must be unique. They use the following form: `projects/{project_number}/locations/global/hubs/{hub_id}`
   &quot;routingVpcs&quot;: [ # The VPC network associated with this hub&#x27;s spokes. All of the VPN tunnels, VLAN attachments, and router appliance instances referenced by this hub&#x27;s spokes must belong to this VPC network. This field is read-only. Network Connectivity Center automatically populates it based on the set of spokes attached to the hub.
     { # RoutingVPC contains information about the VPC network that is associated with a hub&#x27;s spokes.
+      &quot;requiredForNewSiteToSiteDataTransferSpokes&quot;: True or False, # Output only. If true, indicates that this VPC network is currently associated with spokes that use the data transfer feature (spokes where the site_to_site_data_transfer field is set to true). If you create new spokes that use data transfer, they must be associated with this VPC network.
       &quot;uri&quot;: &quot;A String&quot;, # The URI of the VPC network.
     },
   ],
@@ -226,6 +227,7 @@ <h3>Method Details</h3>
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The name of the hub. Hub names must be unique. They use the following form: `projects/{project_number}/locations/global/hubs/{hub_id}`
   &quot;routingVpcs&quot;: [ # The VPC network associated with this hub&#x27;s spokes. All of the VPN tunnels, VLAN attachments, and router appliance instances referenced by this hub&#x27;s spokes must belong to this VPC network. This field is read-only. Network Connectivity Center automatically populates it based on the set of spokes attached to the hub.
     { # RoutingVPC contains information about the VPC network that is associated with a hub&#x27;s spokes.
+      &quot;requiredForNewSiteToSiteDataTransferSpokes&quot;: True or False, # Output only. If true, indicates that this VPC network is currently associated with spokes that use the data transfer feature (spokes where the site_to_site_data_transfer field is set to true). If you create new spokes that use data transfer, they must be associated with this VPC network.
       &quot;uri&quot;: &quot;A String&quot;, # The URI of the VPC network.
     },
   ],
@@ -312,6 +314,7 @@ <h3>Method Details</h3>
       &quot;name&quot;: &quot;A String&quot;, # Immutable. The name of the hub. Hub names must be unique. They use the following form: `projects/{project_number}/locations/global/hubs/{hub_id}`
       &quot;routingVpcs&quot;: [ # The VPC network associated with this hub&#x27;s spokes. All of the VPN tunnels, VLAN attachments, and router appliance instances referenced by this hub&#x27;s spokes must belong to this VPC network. This field is read-only. Network Connectivity Center automatically populates it based on the set of spokes attached to the hub.
         { # RoutingVPC contains information about the VPC network that is associated with a hub&#x27;s spokes.
+          &quot;requiredForNewSiteToSiteDataTransferSpokes&quot;: True or False, # Output only. If true, indicates that this VPC network is currently associated with spokes that use the data transfer feature (spokes where the site_to_site_data_transfer field is set to true). If you create new spokes that use data transfer, they must be associated with this VPC network.
           &quot;uri&quot;: &quot;A String&quot;, # The URI of the VPC network.
         },
       ],
@@ -359,6 +362,7 @@ <h3>Method Details</h3>
   &quot;name&quot;: &quot;A String&quot;, # Immutable. The name of the hub. Hub names must be unique. They use the following form: `projects/{project_number}/locations/global/hubs/{hub_id}`
   &quot;routingVpcs&quot;: [ # The VPC network associated with this hub&#x27;s spokes. All of the VPN tunnels, VLAN attachments, and router appliance instances referenced by this hub&#x27;s spokes must belong to this VPC network. This field is read-only. Network Connectivity Center automatically populates it based on the set of spokes attached to the hub.
     { # RoutingVPC contains information about the VPC network that is associated with a hub&#x27;s spokes.
+      &quot;requiredForNewSiteToSiteDataTransferSpokes&quot;: True or False, # Output only. If true, indicates that this VPC network is currently associated with spokes that use the data transfer feature (spokes where the site_to_site_data_transfer field is set to true). If you create new spokes that use data transfer, they must be associated with this VPC network.
       &quot;uri&quot;: &quot;A String&quot;, # The URI of the VPC network.
     },
   ],

Diff for: googleapiclient/discovery_cache/documents/networkconnectivity.v1.json

@@ -938,7 +938,7 @@
       }
     }
   },
-  "revision": "20211113",
+  "revision": "20211210",
   "rootUrl": "https://networkconnectivity.googleapis.com/",
   "schemas": {
     "AuditConfig": {
@@ -1463,6 +1463,11 @@
       "description": "RoutingVPC contains information about the VPC network that is associated with a hub's spokes.",
       "id": "RoutingVPC",
       "properties": {
+        "requiredForNewSiteToSiteDataTransferSpokes": {
+          "description": "Output only. If true, indicates that this VPC network is currently associated with spokes that use the data transfer feature (spokes where the site_to_site_data_transfer field is set to true). If you create new spokes that use data transfer, they must be associated with this VPC network.",
+          "readOnly": true,
+          "type": "boolean"
+        },
         "uri": {
           "description": "The URI of the VPC network.",
           "type": "string"

Diff for: googleapiclient/discovery_cache/documents/networkconnectivity.v1alpha1.json

@@ -938,7 +938,7 @@
       }
     }
   },
-  "revision": "20211113",
+  "revision": "20211210",
   "rootUrl": "https://networkconnectivity.googleapis.com/",
   "schemas": {
     "AuditConfig": {