librpc/dns: don't compress strings in TKEY and TSIG responses
Certain DNS clients fail TSIG record MAC validation if the TSIG record
contains compressed strings.
Windows DNS server behaviour seems to be to not send compressed names in
TKEY and TSIG records.
This patch ensures we conform to this behaviour.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11520
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
(cherry picked from commit
a51f9989564c28aeece50b56a59e9bb60d41340b)