s3: ntlm_auth: Don't corrupt the output stream with debug messages.

s3: ntlm_auth: Don't corrupt the output stream with debug messages.

Calling programs expect to cleanly read from STDOUT.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12467

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
(cherry picked from commit 9fbd544b90c2b27985637a9bb3fa520f891f8696)

Autobuild-User(v4-4-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-4-test): Thu Dec 15 12:21:27 CET 2016 on sn-devel-144