add redis server on services travis ci
add redis server on services travis ci

AndrzejR/mining,chrisdamba/mining,mining/mining,mining/mining,jgabriellima/mining,mlgruby/mining,avelino/mining,mlgruby/mining,seagoat/mining,AndrzejR/mining,jgabriellima/mining,chrisdamba/mining,mlgruby/mining,avelino/mining,seagoat/mining