Fixed several problems with starting gitlabhq services, and added gitlabhq-slot.target
Fixes problems with earlier PR to run gitlabhq with systemd
Note Still depends on 'unneeded' slotted version of postgresql-9.5.service
Fixes problems with earlier PR to run gitlabhq with systemd
Note Still depends on 'unneeded' slotted version of postgresql-9.5.service