Update resource_container_cluster.go.tmpl to support membership_type

Author: anthonyrtong

mmv1/third_party/terraform/services/container/resource_container_cluster.go.tmpl

@@ -2431,6 +2431,14 @@ func ResourceContainerCluster() *schema.Resource {
 							Computed:         true,
 							Description:      `Location of the fleet membership, for example "us-central1".`,
 						},
+						"membership_type": {
+							Type:         schema.TypeString,
+							Optional:     true,
+							ForceNew:     true,
+							Default:      "MEMBERSHIP_TYPE_UNSPECIFIED",
+							ValidateFunc: validation.StringInSlice([]string{"MEMBERSHIP_TYPE_UNSPECIFIED", "LIGHTWEIGHT"}, false),
+							Description:  `The type of the cluster's fleet membership.`,
+						},
 					},
 				},
 			},