Ticket 47951 - Add PIDFile option to .service
Bug Description: Add the PIDFile option to the .service.
There are two reasons for this.
* First, if the pidfile exists on server stop, it will be removed.
* Second, if the user changes to type=forking, this will let systemd track the
Fix Description: Add the PIDFile line, and remove the startpid as it's no longer
Review by: nhosoi (Thanks!)