Redirect katello-service to foreman-maintain
Katello-service has moved to foreman-maintain and we need to redirect katello-service to foreman-maintain starting in Katello 3.8
Fixes #23615 - Redirect katello service
Katello-service functionality has moved to foreman-maintain. We
can redirect katello-service there since it uses the same arguments.
Katello-service is used pretty widely in documenation and scripts,
I don't see a need to deprecate this just yet (we always can later).
I aligned the issue with foreman 1.19(katello 3.8), so katello
3.7 will still have the original katello-service script.