Updated openstack/openstack
Project: openstack/python-keystoneclient  9fc3a0fd102993f9124978a2d47804f438cb55a1

Docstrings for usability.

The keystoneclient docstrings should give guidance for an
application developer to actually use the library. Here's a start.

Partial-Bug: #1330769
Change-Id: I1a9434704d0cd6b58de76933ff78c8d5c0aa3e3b