refs #7779 - Updating to add support for pulp crane

This is the initial PR to add the puppet-crane module.

This module does a simple config of the Pulp Crane application.
Does that work? I thought that's only for puppet code itself. That said I often prefer pulling them in scope through puppet class parameters because it makes testing easier and also more readable what's actually being used in that class. In some cases it leads to a lot of duplication though.