rm#122543

The samba-dc package from the sambaDC group and the samba-dc-mitkrb5
package from the freeipa-server group conflict.
Without specifying the centaurus directory, the conflict does not work.

By default, the "Office Server" profile is set.
Samba-DC is not included in this profile because
there is a special profile "Samba-DC Server (AD Controller)"

These have been:
- taken from x86_64 server iso (in substituted form);
- checked against m-p-d where needed;
- renamed from centaurus-* to centaurus/*;
- updated with s/samba-server/samba/;
- archdep bits adjusted for m-p-d/m-p syntax difference;
- amended with some tester feedback based additions included;
- pruned regarding p9/branch packages availability.