Dvsm job is failing

Need to update tempest revision.

2015-04-13 22:19:57.690 | 2015-04-13 22:19:57.476 | Captured traceback:
2015-04-13 22:19:57.691 | 2015-04-13 22:19:57.479 | ~~~~~~~~~~~~~~~~~~~
2015-04-13 22:19:57.692 | 2015-04-13 22:19:57.481 | Traceback (most recent call last):
2015-04-13 22:19:57.692 | 2015-04-13 22:19:57.483 | File "tempest/test.py", line 241, in setUpClass
2015-04-13 22:19:57.693 | 2015-04-13 22:19:57.485 | cls.resource_setup()
2015-04-13 22:19:57.694 | 2015-04-13 22:19:57.486 | File "tempest/api/keyvalue/rest_base/base.py", line 45, in resource_setup
2015-04-13 22:19:57.694 | 2015-04-13 22:19:57.488 | cls.os = cls.get_client_manager()
2015-04-13 22:19:57.695 | 2015-04-13 22:19:57.490 | File "tempest/test.py", line 375, in get_client_manager
2015-04-13 22:19:57.696 | 2015-04-13 22:19:57.491 | creds = cls.isolated_creds.get_primary_creds()
2015-04-13 22:19:57.696 | 2015-04-13 22:19:57.492 | File "tempest/common/isolated_creds.py", line 270, in get_primary_creds
2015-04-13 22:19:57.697 | 2015-04-13 22:19:57.494 | return self.get_credentials('primary')
2015-04-13 22:19:57.698 | 2015-04-13 22:19:57.495 | File "tempest/common/isolated_creds.py", line 254, in get_credentials
2015-04-13 22:19:57.698 | 2015-04-13 22:19:57.496 | credentials = self._create_creds(admin=is_admin)
2015-04-13 22:19:57.699 | 2015-04-13 22:19:57.498 | File "tempest/common/isolated_creds.py", line 125, in _create_creds
2015-04-13 22:19:57.699 | 2015-04-13 22:19:57.499 | self._assign_user_role(tenant, user, role)
2015-04-13 22:19:57.700 | 2015-04-13 22:19:57.501 | File "tempest/common/isolated_creds.py", line 83, in _assign_user_role
2015-04-13 22:19:57.700 | 2015-04-13 22:19:57.504 | role['id'])
2015-04-13 22:19:57.701 | 2015-04-13 22:19:57.506 | File "tempest/services/identity/json/identity_client.py", line 86, in assign_user_role
2015-04-13 22:19:57.701 | 2015-04-13 22:19:57.508 | (tenant_id, user_id, role_id), "")
2015-04-13 22:19:57.702 | 2015-04-13 22:19:57.509 | File "/opt/stack/new/tempest/.tox/all/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 315, in put
2015-04-13 22:19:57.702 | 2015-04-13 22:19:57.511 | return self.request('PUT', url, extra_headers, headers, body)
2015-04-13 22:19:57.703 | 2015-04-13 22:19:57.512 | File "tempest/common/service_client.py", line 60, in request
2015-04-13 22:19:57.704 | 2015-04-13 22:19:57.515 | headers=headers, body=body)
2015-04-13 22:19:57.704 | 2015-04-13 22:19:57.516 | File "/opt/stack/new/tempest/.tox/all/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 629, in request
2015-04-13 22:19:57.705 | 2015-04-13 22:19:57.518 | resp, resp_body)
2015-04-13 22:19:57.705 | 2015-04-13 22:19:57.519 | File "/opt/stack/new/tempest/.tox/all/local/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 685, in _error_checker
2015-04-13 22:19:57.706 | 2015-04-13 22:19:57.521 | raise exceptions.Conflict(resp_body)
2015-04-13 22:19:57.706 | 2015-04-13 22:19:57.522 | tempest_lib.exceptions.Conflict: An object with that identifier already exists
2015-04-13 22:19:57.707 | 2015-04-13 22:19:57.524 | Details: {u'code': 409, u'message': u'Conflict occurred attempting to store role grant - User 8a9f10d2121642538a66041b4bdd0731 already has role 5607cdf4d66546e099f0feba0dfe43a2 in tenant 290920cec4c147639ed295e0bd8e54cc', u'title': u'Conflict'}