Instead of keeping a local copy of spec_helper_acceptance.rb and
requiring updates to all modules for any change, we can move it into the
common helper gem and require it from there. This will make it easier to
create and review changes that affect all puppet modules. Also change
the Gemfile to look for the gem in the local workspace if running in a
zuul environment.
Change-Id: I9cf7c8e74637fbe9d871ea73351ecebdd9c55cfb
Add a xenial nodeset and update the spec helper to install puppet 3 from
the Ubuntu repos instead of from puppetlabs.
Change-Id: I9919593612c4451cb40555a42afea2b1f8c9e466
Monty Taylor