[PATCH] wsdapi/tests: Expand ProbeHandler tests.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=38383

Your paranoid android.


=== wvistau64_fr (32 bit discovery) ===
discovery.c:918: Test failed: Probe message not received

=== w7u (32 bit discovery) ===
discovery.c:918: Test failed: Probe message not received

=== w7pro64 (64 bit discovery) ===
discovery.c:918: Test failed: Probe message not received