Implement a service that will deploy TripleO Validations package and
user by using Puppet like we did with instack-undercloud. This service
will be included on the undercloud but disabled by default. We'll keep
the same interface in undercloud.conf to enable it or not so no change
for the end user.
Change-Id: Ida09f92010e31d952edd82b42a7fc20451537d42