[hotfix] use  instead of prod for Travis build, take2
[hotfix] use  instead of prod for Travis build, take2

SingTel-DataCo/incubator-superset,ArijanaBrlek/superset,timifasubaa/incubator-superset,SingTel-DataCo/incubator-superset,jeromecn/caravel_viz_full,nekia/incubator-superset-dev,jeromecn/caravel_viz_full,nekia/incubator-superset-dev,BRD-CD/superset,massgov/incubator-superset,timifasubaa/incubator-superset,nekia/incubator-superset-dev,zhouyao1994/incubator-superset,SingTel-DataCo/incubator-superset,zhouyao1994/incubator-superset,nekia/incubator-superset-dev,apache/incubator-superset,airbnb/caravel,BRD-CD/superset,apache/incubator-superset,asdf2014/superset,FrederichCheng/incubator-superset,airbnb/superset,alanmcruickshank/superset-dev,massgov/incubator-superset,asdf2014/superset,FrederichCheng/incubator-superset,ArijanaBrlek/superset,timifasubaa/incubator-superset,mistercrunch/panoramix,robert-digit/superset,FrederichCheng/incubator-superset,SingTel-DataCo/incubator-superset,ArijanaBrlek/superset,airbnb/caravel,airbnb/superset,apache/incubator-superset,jeromecn/caravel_viz_full,BRD-CD/superset,airbnb/caravel,mistercrunch/panoramix,apache/incubator-superset,dmigo/incubator-superset,asdf2014/superset,ArijanaBrlek/superset,robert-digit/superset,dmigo/incubator-superset,FrederichCheng/incubator-superset,timifasubaa/incubator-superset,apache/incubator-superset,massgov/incubator-superset,zhouyao1994/incubator-superset,airbnb/superset,alanmcruickshank/superset-dev,dmigo/incubator-superset,alanmcruickshank/superset-dev,airbnb/caravel,mistercrunch/panoramix,zhouyao1994/incubator-superset,robert-digit/superset,robert-digit/superset,jeromecn/caravel_viz_full,zhouyao1994/incubator-superset,airbnb/superset,asdf2014/superset,mistercrunch/panoramix,BRD-CD/superset,massgov/incubator-superset,dmigo/incubator-superset,alanmcruickshank/superset-dev