bug #10471: Don't respond with NXDOMAIN to records that exist with another type

DNS queries for records with the wrong type need to trigger an empty
response with RCODE_OK instead of returning NXDOMAIN.

This adds a test and fixes bug #10471

Signed-off-by: Kai Blin <kai@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
dns: Extend tests for records with another type

Add another check to the one added for bug #10471, for added paranoia

Signed-off-by: Kai Blin <kai@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Kai Blin <kai@samba.org>
Autobuild-Date(master): Tue Mar  4 15:47:10 CET 2014 on sn-devel-104