Fix control server integration tests

[Askaholic]

The control server seems to be unable to bind to the default address on github actions?

I guess it's primarily an issue of host name resolution not returning the correct address in github actions ubuntu VM's. So at least in theory binding directly to 127.0.0.1 should solve the issue by avoiding name resolution entirely.

#772

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (develop@74f6fa0). Click here to learn what that means.
The diff coverage is 97.36%.

Impacted Files	Coverage Δ
server/gameconnection.py	95.03% <96.87%> (ø)
server/games/coop.py	100.00% <100.00%> (ø)
server/games/game.py	95.55% <100.00%> (ø)
server/games/typedefs.py	98.07% <100.00%> (ø)