Updated openstack/openstack
Project: openstack/python-cinderclient  d77b6f8287bb6762d168d1f0fef706b877d0e863

Update theme for docs

The current developer docs theme used is out of sync with the other
openstack projects. This patch will update the docs to provide a more
consistent look and feel when using developer docs

Change-Id: I9fd11b61d4404ba2627569074dc86ee0ddf0f96a