Updated openstack/openstack
Project: openstack/python-keystoneclient  85194d72a0d15b11e807d4f43703d700fe6ab187

Fix mappings.Mapping docstring

Rules examples in ``create`` and ``update`` methods should be list of
rules, as this is what should be passed as an argument.

Change-Id: Ibebc28aa0697879b00437c5efe31e1c0d7c4c29d