run from PATH

Index: gitlab/lib/support/init.d/gitlab
===================================================================
--- gitlab.orig/lib/support/init.d/gitlab
+++ gitlab/lib/support/init.d/gitlab
@@ -238,7 +238,7 @@ start_gitlab() {
   else
     # No need to remove a socket, gitlab-workhorse does this itself
     $app_root/bin/daemon_with_pidfile $gitlab_workhorse_pid_path  \
-      $app_root/../gitlab-workhorse/gitlab-workhorse \
+      gitlab-workhorse \
         $gitlab_workhorse_options \
       >> $gitlab_workhorse_log 2>&1 &
   fi