Updated openstack/openstack
Project: openstack/python-keystoneclient  820a68a44a560db071faeb9eac720ced231691bf
null
Make sure to unset all variable starting with OS_

Some OS_ variables are conflicting with the tests, make sure to unset
them before starting the CLI tests.

Change-Id: Ie4ef467571137a685976d36026866889f7a2a1a8
Closes-Bug: 1278144