NXD gitlab:check:app : Don't check for init script

Like Omnibus, SlapOS version does not have init script - nothing to
check here.

lib/tasks/gitlab/check.rake

@@ -180,6 +180,9 @@ namespace :gitlab do
     def check_init_script_up_to_date
       print "Init script up-to-date? ... "
 
+      puts 'skipped (slapos version has no init script)'.magenta
+      return
+
       if omnibus_gitlab?
         puts 'skipped (omnibus-gitlab has no init script)'.magenta
         return