diskless nfs - Add a remount feature for /conf.

diskless nfs - Add a remount feature for /conf.

* Add a feature where you can now remount the dirs in /conf so that
  you can e.g. have a /conf/10.1.2.3 that gets remounted off the local
  hdd of that machine before rc.d/initdiskless actually does it's thing
  and enables you to have private ssh keys that other diskless clients
  cannot access, but still enables you to exploit /conf to it's fullest.

Submitted-by: Rumko