zone_name is null in zone trasfer request response

The response to API call has zone_id set with
zone id but zone name is set to 'null'.

Change-Id: Id2d093891953efcbb125560ea1113b8a9e613a9c
Closes-Bug: #1580014

designate/api/v2/controllers/zones/tasks/transfer_requests.py

@@ -88,6 +88,8 @@ class TransferRequestsController(rest.RestController):
         except exceptions.EmptyRequestBody:
             body = dict()
 
+        zone = self.central_api.get_zone(context, zone_id)
+        body['zone_name'] = zone.name
         body['zone_id'] = zone_id
 
         zone_transfer_request = DesignateAdapter.parse(

designate/objects/adapters/api_v2/zone_transfer_request.py

@@ -49,6 +49,7 @@ class ZoneTransferRequestAPIv2Adapter(base.APIv2Adapter):
                 'protected': False
             },
             "zone_name": {
+                'immutable': True,
                 'protected': False
             },
             "created_at": {},

designate/tests/test_api/test_v2/test_zone_transfers.py

@@ -42,6 +42,9 @@ class ApiV2ZoneTransfersTest(ApiV2TestCase):
         self.assertIn('id', response.json)
         self.assertIn('created_at', response.json)
         self.assertEqual('ACTIVE', response.json['status'])
+        self.assertEqual(
+            self.zone.name,
+            response.json['zone_name'])
         self.assertEqual(
             self.zone.id,
             response.json['zone_id'])

releasenotes/notes/zone_name-null-zone-trasfer-request-response-a2e316872798d1df.yaml

@@ -0,0 +1,3 @@
+---
+fixes:
+  - Added zone_name in zone trasfer request response. Closed bug#1580014