The CentOS packages install a default version of the paste file
but don't install them in the /etc directory. Kolla doesn't
configure the paste files, so this file never gets setup properly.
With the recent change in Keystone around the default admin_token
being changed, this triggered Keystone to return a 401 Auth error.
A follow-on patch from Sam edits this file, and that patch breaks
the build without this dependent patch.
TrivialFix
Change-Id: Ib1568e186bdd7d19b7e5af151388197755902488
03568ce863