feat(metastore): update the API

#### metastore:v1alpha

The following keys were added:
- schemas.EncryptionConfig.description
- schemas.EncryptionConfig.id
- schemas.EncryptionConfig.properties.kmsKey.description
- schemas.EncryptionConfig.properties.kmsKey.type
- schemas.EncryptionConfig.type
- schemas.Service.properties.encryptionConfig.$ref
- schemas.Service.properties.encryptionConfig.description

discovery/metastore-v1alpha.json

@@ -986,7 +986,7 @@
       }
     }
   },
-  "revision": "20210615",
+  "revision": "20210702",
   "rootUrl": "https://metastore.googleapis.com/",
   "schemas": {
     "AuditConfig": {
@@ -1168,6 +1168,17 @@
       "properties": {},
       "type": "object"
     },
+    "EncryptionConfig": {
+      "description": "Encryption settings for the service.",
+      "id": "EncryptionConfig",
+      "properties": {
+        "kmsKey": {
+          "description": "The fully qualified customer provided Cloud KMS key name to use for customer data encryption, in the following form:projects/{project_number}/locations/{location_id}/keyRings/{key_ring_id}/cryptoKeys/{crypto_key_id}.",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "ExportMetadataRequest": {
       "description": "Request message for DataprocMetastore.ExportMetadata.",
       "id": "ExportMetadataRequest",
@@ -1847,6 +1858,10 @@
           "readOnly": true,
           "type": "string"
         },
+        "encryptionConfig": {
+          "$ref": "EncryptionConfig",
+          "description": "Immutable. Information used to configure the Dataproc Metastore service to encrypt customer data at rest. Cannot be updated."
+        },
         "endpointUri": {
           "description": "Output only. The URI of the endpoint used to access the metastore service.",
           "readOnly": true,

src/apis/metastore/v1alpha.ts

@@ -231,6 +231,15 @@ export namespace metastore_v1alpha {
    * A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); \} The JSON representation for Empty is empty JSON object {\}.
    */
   export interface Schema$Empty {}
+  /**
+   * Encryption settings for the service.
+   */
+  export interface Schema$EncryptionConfig {
+    /**
+     * The fully qualified customer provided Cloud KMS key name to use for customer data encryption, in the following form:projects/{project_number\}/locations/{location_id\}/keyRings/{key_ring_id\}/cryptoKeys/{crypto_key_id\}.
+     */
+    kmsKey?: string | null;
+  }
   /**
    * Request message for DataprocMetastore.ExportMetadata.
    */
@@ -666,6 +675,10 @@ export namespace metastore_v1alpha {
      * Output only. The time when the metastore service was created.
      */
     createTime?: string | null;
+    /**
+     * Immutable. Information used to configure the Dataproc Metastore service to encrypt customer data at rest. Cannot be updated.
+     */
+    encryptionConfig?: Schema$EncryptionConfig;
     /**
      * Output only. The URI of the endpoint used to access the metastore service.
      */
@@ -1585,6 +1598,7 @@ export namespace metastore_v1alpha {
      *       // {
      *       //   "artifactGcsUri": "my_artifactGcsUri",
      *       //   "createTime": "my_createTime",
+     *       //   "encryptionConfig": {},
      *       //   "endpointUri": "my_endpointUri",
      *       //   "hiveMetastoreConfig": {},
      *       //   "labels": {},
@@ -2018,6 +2032,7 @@ export namespace metastore_v1alpha {
      *   // {
      *   //   "artifactGcsUri": "my_artifactGcsUri",
      *   //   "createTime": "my_createTime",
+     *   //   "encryptionConfig": {},
      *   //   "endpointUri": "my_endpointUri",
      *   //   "hiveMetastoreConfig": {},
      *   //   "labels": {},
@@ -2442,6 +2457,7 @@ export namespace metastore_v1alpha {
      *       // {
      *       //   "artifactGcsUri": "my_artifactGcsUri",
      *       //   "createTime": "my_createTime",
+     *       //   "encryptionConfig": {},
      *       //   "endpointUri": "my_endpointUri",
      *       //   "hiveMetastoreConfig": {},
      *       //   "labels": {},