refs #7779 - Updating to add support for pulp crane

This PR is one of a collection of PRs to puppet modules which will be needed to enable katello to support install/config of pulp docker & crane on the katello server.

The related PRs, so far are:
- this one
- https://github.com/Katello/puppet-pulp/pull/29
- https://github.com/Katello/puppet-crane/pull/1