Failing dpnet tests

[Alistair Leslie-Hughes]

Hi Francois,

The issue is when it run on the test bot.

This patch removed all tests and traces around CoCreateInstance.
https://newtestbot.winehq.org/JobDetails.pl?Key=4949&log_201=1#k201

Its timing out.  I've seen this on Linux when mixing native dpnsvr.exe and
builtin dpnet.dll due to the missing callback in dpnet.dll (not a windows 
issue).
If dpnsvr uses the local address instead of the loopback then this cause the 
timeout.

Would it be possible to test windows 8 without the firewall enabled?

It's going to be hard to get patches accepted if win8 keeps failing.

Best Regards
Alistair Leslie-Hughes