Updated openstack/openstack
Project: openstack/python-keystoneclient  8b267842a701970d4e1aae2f115afe4d73bc5ee6

Docstrings should have :returns: everywhere.

Some of the docstrings have ``:return:`` instead of ``:returns:``
keyword. This patch fixes that and make it consistent.

Change-Id: I4321a63798ab9e2abdf0bbd716bf2b995be22ba3