add xms-ids for notificationhubs (#17909)

Author: LinglingTong

specification/notificationhubs/resource-manager/Microsoft.NotificationHubs/stable/2017-04-01/notificationhubs.json

@@ -1501,7 +1501,10 @@
           "description": "List of NotificationHubs operations supported by the Microsoft.NotificationHubs resource provider.",
           "items": {
             "$ref": "#/definitions/Operation"
-          }
+          },
+          "x-ms-identifiers": [
+            "name"
+          ]
         },
         "nextLink": {
           "readOnly": true,
@@ -2087,6 +2090,9 @@
           "items": {
             "$ref": "#/definitions/SharedAccessAuthorizationRuleProperties"
           },
+          "x-ms-identifiers": [
+            "keyName"
+          ],
           "description": "The AuthorizationRules of the created NotificationHub"
         },
         "apnsCredential": {