Fix operator precedence issues
For now don't allow registering host dns entries when using GSS-TSIG auth
Ensure that openshift_origin::nameserver completes before registering dns

Without this we may try to register_dns before the nameserver firewall rules are
in place
Merge pull request #363 from sdodson/bz1160099

Ensure that openshift_origin::nameserver completes before registering dn...
Merge pull request #361 from sdodson/bz1162052

Fix GSS-TSIG nsupdate
Clean up to avoid unnecessary notices and service restarts