Updated openstack/openstack
Project: openstack/python-openstackclient  c55fdb6f6d1fc356ee03cf21fdf3d5b99418c921

Beef up object-store tests

* Add object top-to-bottom tests
* Move some fakes around
* Clean up existing object tests

Change-Id: If8406da611c11bbd2b1bf5153e45b720b0eea442