releasenotes/notes/add-image-clients-tests-49dbc0a0a4281a77.yaml

---
features:
  - |
    As in the [doc]:
    http://developer.openstack.org/api-ref/image/v2/metadefs-index.html,
    there are some apis are not included, add them.

      * namespace_objects_client(v2)
      * namespace_tags_client(v2)