Wrong hint key in volume create function

Hint key has to be 'OS-SCH-HNT:scheduler_hints' not 'scheduler_hints'
and scheduler_hints key has to be located in same level with volume.

Change-Id: Ic5888545d4b7ee6bb58a22840928ef1fc86fedfa
Closes-Bug: #1276088

.mailmap

@@ -13,3 +13,4 @@ Andy Smith <github@anarkystic.com> termie <github@anarkystic.com>
 <matt.dietz@rackspace.com> <matthew.dietz@gmail.com>
 Nikolay Sokolov <nsokolov@griddynamics.com> Nokolay Sokolov <nsokolov@griddynamics.com>
 Nikolay Sokolov <nsokolov@griddynamics.com> Nokolay Sokolov <chemikadze@gmail.com>
+<skanddh@gmail.com> <seungkyu.ahn@samsung.com>

cinderclient/tests/v2/test_volumes.py

@@ -36,6 +36,24 @@ class VolumesTest(utils.TestCase):
         cs.volumes.create(1)
         cs.assert_called('POST', '/volumes')
 
+    def test_create_volume_with_hint(self):
+        cs.volumes.create(1, scheduler_hints='uuid')
+        expected = {'volume': {'status': 'creating',
+                               'description': None,
+                               'availability_zone': None,
+                               'source_volid': None,
+                               'snapshot_id': None,
+                               'size': 1,
+                               'user_id': None,
+                               'name': None,
+                               'imageRef': None,
+                               'attach_status': 'detached',
+                               'volume_type': None,
+                               'project_id': None,
+                               'metadata': {}},
+                    'OS-SCH-HNT:scheduler_hints': 'uuid'}
+        cs.assert_called('POST', '/volumes', body=expected)
+
     def test_attach(self):
         v = cs.volumes.get('1234')
         cs.volumes.attach(v, 1, '/dev/vdc', mode='ro')

cinderclient/v2/volumes.py

@@ -180,8 +180,11 @@ class VolumeManager(base.ManagerWithFind):
                            'metadata': volume_metadata,
                            'imageRef': imageRef,
                            'source_volid': source_volid,
-                           'scheduler_hints': scheduler_hints,
                            }}
+
+        if scheduler_hints:
+            body['OS-SCH-HNT:scheduler_hints'] = scheduler_hints
+
         return self._create('/volumes', body, 'volume')
 
     def get(self, volume_id):