Add services redis server on travis
Add services redis server on travis

williamroot/opps,jeanmask/opps,jeanmask/opps,opps/opps,opps/opps,YACOWS/opps,opps/opps,YACOWS/opps,williamroot/opps,jeanmask/opps,williamroot/opps,opps/opps,jeanmask/opps,YACOWS/opps,YACOWS/opps,williamroot/opps