Fix small pep8 issue

This slipped through as it is an existing bug in 1.4.5.

Change-Id: Ie8019f92608320fbcf05ed22063ed326e618ca93
Closes-Bug: #1267994
Fixing tests to work with keystoneclient 0.6.0

Another item needs mocking with the new release of
python_keystoneclient. Adding it to mocked keystoneclient.Client
object.

Closes-Bug: #1279907
Change-Id: I3c43a7290a6e05c718082dcad369162bf21e3603
Merge "Fix small pep8 issue"