Updated openstack/openstack
Project: openstack/python-keystoneclient  cc0c93fc0c4c5d0240a5a96c57f1fd62988ee6aa

Correct Session docstring

The online docs for the Session class are unusable because the
arguments to __init__ were not displayed.

This and other issues in the docstrings for the class are corrected.

Change-Id: Ia03b785f132f7d21ba576c0c8d634051d7127319