Updated openstack/openstack
Project: openstack/nova  ef86557149d8fab1465fa638cc3f114351640762

Fix config generator to use keystonemiddleware

The auth_token middleware was moved from keystoneclient.middleware
to keystonemiddleware. The config generator is configured to point
to the new location.

Closes-Bug: #1366594
Change-Id: I5543973b2c7ac06c048686c24354ecf6eb251027