Puppet Forge release 2.0.0

  Marks the commit that the branch stable/grizzly and the 2.0.0 tag is
  cut from.  Also adds a .gitignore with the pkg directory entry to
  prevent accidental committing of Forge artifacts to the repository.

Change-Id: Idd86f15ce7461158ad8c3a6487434df753913ed7
Various Puppet lint fixes

* Fix following warning:
    * variable not enclosed in {}

Change-Id: I12ef583cca1330769e1c118b1b496929fb549732
Merge branch 'dev' of https://github.com/gwdg/puppetlabs-horizon into dev