Fix some puppet lint errors

Received bug report from David Moreau Simard <moi@dmsimard.com> about the rc/eisbrecher code state showing the following error before compiling the catalog with puppet 3.3.x:

*Error: Could not retrieve catalog from remote server: Could not intern from text/pson: Could not convert from pson: Could not find relationship target "Ceph::Conf::Osd[]"*

These commits fixed it for David and may affect also our setup. Cherry-picked them from https://github.com/dalgaaf/puppet-ceph/tree/feature/wip-da-rework-and-simplify. These make also Travis CI pass again.

This contains also a small change to make sure the ceph-common package get installed where ceph-authtool is needed (7138009).