s4-setup Remove servicePrincipalName: DNS/${DNSDOMAIN} from new installations

s4-setup Remove servicePrincipalName: DNS/${DNSDOMAIN} from new installations

This servicePrincipalName is incorrect (windows does not use that
servicePrincipalName, as it targets the server it is updating, not the
root of the DNS tree), and now that we have multiple DNS backends that
use the internal database, it is quite incorrect (as it cannot exist
on more than one account).

Andrew Bartlett

Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Thu Nov 10 01:11:46 CET 2011 on sn-devel-104