Updated openstack/openstack
Project: openstack/python-openstackclient  207c8cf3ef9237d21cde704eff767523b5f12f35

Test top-to-bottom: object-store containers

Replicate the object-store container command tests but use requests_mock
to test the entire stack down to the requests module.

These will be useful regressions tests when the existing object-store lib
modules are moved to the low-level API object.

Change-Id: Ibf25be46156eb1009f1b66f02f2073d3913b846d