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.
Sorry I didn't catch this the first time! Conventionally these should be pointing at the params

```
@key = $crane::params::key,
@cert = $crane::params::cert,
@ca_cert = $crane::params::ca_cert,