Updated openstack/openstack
Project: openstack/nova  d1ce491f9b6c717ea4b3ca3e7505d6d47fda1bfd
null
Update nova.conf.sample for python-keystoneclient 0.5.0

python-keystoneclient 0.5.0 added a new oslo.config option:

 enforce_token_bind=permissive

Change-Id: If719600866561e03b037b1eb1f58e14103a99385