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
Oh, right - that makes sense. If including qpid, I think you could change the below to:

```
Group[qpid::group] ->
```