fakeaur/server: set SO_REUSEADDR on socket
fakeaur/server: set SO_REUSEADDR on socket

Avoids problems from the socket being stuck in TIME_WAIT after server
shutdown. This might be a bug in request handling, but i don't really
care about clean shutdowns if the tests pass.

falconindy/auracle,falconindy/auracle,falconindy/auracle