move kafka timeout to 30 sec for travis
move kafka timeout to 30 sec for travis

appsoma/pykafka,wikimedia/operations-debs-python-pykafka,jofusa/pykafka,thedrow/samsa,wikimedia/operations-debs-python-pykafka,fortime/pykafka,benauthor/pykafka,sammerry/pykafka,sontek/pykafka,sontek/pykafka,benauthor/pykafka,yungchin/pykafka,thedrow/samsa,jofusa/pykafka,tempbottle/pykafka,vortec/pykafka,benauthor/pykafka,vortec/pykafka,wikimedia/operations-debs-python-pykafka,sammerry/pykafka,fortime/pykafka,aeroevan/pykafka,thedrow/samsa,aeroevan/pykafka,appsoma/pykafka,tempbottle/pykafka,yungchin/pykafka