patch tests to fix test traceback
patch tests to fix test traceback

(nick: check if i did what you wanted to test)

reezer/mixminion,mixminion/mixminion,rxcomm/mixminion,crooks/mixminion,rxcomm/mixminion,reezer/mixminion,reezer/mixminion,crooks/mixminion,mixminion/mixminion,mixminion/mixminion,Javex/mixminion,nmathewson/mixminion,crooks/mixminion,rxcomm/mixminion,reezer/mixminion,Javex/mixminion,Javex/mixminion,nmathewson/mixminion,nmathewson/mixminion,crooks/mixminion,Javex/mixminion,nmathewson/mixminion,rxcomm/mixminion,mixminion/mixminion