[tempest] test_update_user_password in tempest.api.identity.v2.test_users.IdentityUsersTest fails with 401 Unauthorized

fuel-8.0-277-2015-12-09_16-24-26

Traceback:

traceback
Traceback (most recent call last):
  File "/home/developer/mos-tempest-runner/tempest/tempest/api/identity/v2/test_users.py", line 62, in test_user_update_own_password
    self.non_admin_token_client.auth_token(resp['token']['id'])
  File "/home/developer/mos-tempest-runner/.venv/lib/python2.7/site-packages/tempest_lib/services/identity/v2/token_client.py", line 69, in auth_token
    resp, body = self.post(self.auth_url, body=body)
  File "/home/developer/mos-tempest-runner/.venv/lib/python2.7/site-packages/tempest_lib/common/rest_client.py", line 259, in post
    return self.request('POST', url, extra_headers, headers, body)
  File "/home/developer/mos-tempest-runner/.venv/lib/python2.7/site-packages/tempest_lib/services/identity/v2/token_client.py", line 92, in request
    raise exceptions.Unauthorized(resp_body['error']['message'])
tempest_lib.exceptions.Unauthorized: Unauthorized
Details: Failed to validate token (Disable debug mode to suppress these details.)

Build link: https://jenkins.mosi.mirantis.net/view/Periodic%20(deployment)/job/periodic-testing-deploy-openstack-8.0-ubuntu-vlan-ceph-swift/71/