tests: Relax auth_log SMB assertions to cover v1 *or* v2

tests: Relax auth_log SMB assertions to cover v1 *or* v2

The s4 Python bindings currently only support SMBv1 connections.
If we change the bindings to support *either* v1 or v2, they'll
end up negotiating v2. In which case the server is "SMB2", not "SMB",
and these assertions fail.

Long-term we want to get rid of SMBv1, so it makes sense to write the
tests so that they pass against either v1 or v2.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>