samba_upgradedns: Do not print confusing logs about missing .zone files

samba_upgradedns: Do not print confusing logs about missing .zone files

samba_upgradedns prints confusing logs about upgrading zone files
and automatically creating DNS zones when the zone already exists.

We need to move the logging to later when we know we what we are
using the parsed information for.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14580

Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Nov 26 08:16:04 UTC 2020 on sn-devel-184