add test.conf for test cases
add test.conf for test cases

daewon/incubator-s2graph,jongwook/incubator-s2graph,daewon/incubator-s2graph,jongwook/incubator-s2graph,SteamShon/incubator-s2graph,SteamShon/incubator-s2graph,SteamShon/incubator-s2graph