Support more druid postaggregations. (#2235)
Support more druid postaggregations. (#2235)


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