[Samba] preparing for a new site with an extra domain controller

[Stefan G. Weichinger]

Am 10.12.24 um 15:10 schrieb Luis Peromarta via samba:
> No issue, sync will continue next time network is up.

great

As I prepare that I also hit the fact that I should switch from 
one-directional sysvol-sync to bi/multidirectional sync via unison or osync.

That means I have to switch over the existing syncing also, right now we 
do the basic rsync-syncing. I will do that first, after backups and rtfm.