Ticket 49294 - radiusd before in unit file
Bug Description: freeradiusd often won't start correctly with
dirsrv due to a race condition.
Fix Description: Force dirsrv to have a "before" line to start
before freeradiusd does.
https://pagure.io/389-ds-base/issue/49294
Author: wibrown
Review by: mreynolds (Thanks!)