s4-dns: dlz_bind9: Create dns-HOSTNAME account disabled

s4-dns: dlz_bind9: Create dns-HOSTNAME account disabled

Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Oct 25 00:39:21 CEST 2013 on sn-devel-104

(cherry picked from commit d3aee80928dc7ccde9441309bf946c2503f7714a)

Part of a fix for bug #9091 - When replicating DNS for bind9_dlz we need to
create the server-DNS account remotely.

Autobuild-User(v4-0-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-0-test): Thu Nov  7 10:43:12 CET 2013 on sn-devel-104