www/otrs: add missing dependencies, and missing DBUpdateTo6 scripts
- Add missing dependencies
- Attempt to run otrs.SetPermissions.pl script on install. It is going to work if there is an existing otrs user from the previous installation. Users installing the port for the first time should run it manually as stated in pkg-message.
- Install DBUpdateTo6 scripts
PR: 227924, 228106
Reported by: jonaspalm@posteo.de
Submitted by: m.tsatsenko@gmail.com (maintainer), Felix J. Ogris <fjo@ogris.de>