[GH-3378] Reinstate JRuby CI runs
[GH-3378] Reinstate JRuby CI runs

This no longer ignores build failures in Travis for the stable JRubies.

Had been ignored due to a gem trying to pull in a C extension and
choking the tests.

See https://github.com/fog/fog/issues/3378

SpryBTS/fog,pyama86/fog,icco/fog,mitchlloyd/fog,plribeiro3000/fog,glennpratt/fog,surminus/fog,SpryBTS/fog,dhague/fog,fog/fog,Programatica/fog,icco/fog,fog/fog,eLobato/fog,kongslund/fog,pravi/fog,Ladas/fog,bryanl/fog,nalabjp/fog,cocktail-io/fog,martinb3/fog,TerryHowe/fog,theforeman/fog,dLobatog/fog,theforeman/fog,seanhandley/fog,adamleff/fog,sapcc/fog,duhast/fog,joshisa/fog,pyama86/fog,duhast/fog,unorthodoxgeek/fog,glennpratt/fog,nalabjp/fog,lwander/fog,TerryHowe/fog,joshmyers/fog,runtimerevolution/fog,adecarolis/fog,ManageIQ/fog,kongslund/fog,rackspace/fog,covario-cdiaz/fog,asebastian-r7/fog,github/fog,Programatica/fog,sapcc/fog,eLobato/fog,plribeiro3000/fog,sideci-sample/sideci-sample-fog,zephyrean/fog,b0ric/fog,bryanl/fog,cocktail-io/fog,surminus/fog,mitchlloyd/fog,covario-cdiaz/fog,ack/fog,mavenlink/fog,sideci-sample/sideci-sample-fog,rackspace/fog,mohitsethi/fog,yyuu/fog,Ladas/fog,ack/fog,asebastian-r7/fog,github/fog,pravi/fog,ManageIQ/fog,nicolasbrechet/fog,nicolasbrechet/fog,joshmyers/fog,dhague/fog,papedaniel/fog,mohitsethi/fog,unorthodoxgeek/fog,dtdream/fog,b0ric/fog,yyuu/fog,mavenlink/fog,dtdream/fog,zephyrean/fog,martinb3/fog,dustacio/fog,seanhandley/fog,zephyrean/fog,adamleff/fog,dustacio/fog,adecarolis/fog,papedaniel/fog,lwander/fog,dLobatog/fog,joshisa/fog,runtimerevolution/fog