Aha, I see. I made hostgroup parameter required and added [Deployment#service_hostgroup_map](https://github.com/theforeman/staypuft/pull/106/files#diff-ae7bf35776f01886377e3e7a2f7ded9eR107). To have the hostgroup mapping at hand. I think it should be easy to rebase this on my PR. It seems that `deployment` param is redundant (only for the default value).