Fixes #7802 - ensures qpidd group present before adding user to group

Related pull-requests that fixes  #7802
https://github.com/Katello/puppet-katello/pull/45
https://github.com/Katello/puppet-katello_devel/pull/26
https://github.com/Katello/puppet-qpid/pull/11
@ehelms couldn't get Group[qpid::group] working
wasn't able to get around this error message: "Could not find resource 'Group[undef]' for relationship from 'Class[Katello]' on node"