Updated openstack/openstack
Project: openstack-dev/devstack  490e908b0e268845f10286875162f3329e8b61f6
null
Use nova.conf for auth_token configs.

Updates lib/nova so that we use the application config file (nova.conf)
instead of the Nova api-paste.ini config file.

Related-Bug #1240753

Change-Id: I393a67f1f005e775928130c9241aa7e25c391ae3