Use ruby 2.5.0 in Travis
Use ruby 2.5.0 in Travis

hennevogel/hackweek,hennevogel/hackweek,hennevogel/hackweek,srinidhibs/hackweek,srinidhibs/hackweek,SUSE/hackweek,srinidhibs/hackweek,SUSE/hackweek,srinidhibs/hackweek,SUSE/hackweek