[spark] Send all the snippet to close when leaving the notebook
[spark] Send all the snippet to close when leaving the notebook

Mostly for Impala now, we do nothing special for Spark sessions.

Peddle/hue,GitHublong/hue,dulems/hue,mapr/hue,kawamon/hue,javachengwc/hue,cloudera/hue,fangxingli/hue,jounex/hue,ahmed-mahran/hue,xiangel/hue,ChenJunor/hue,yoer/hue,jounex/hue,cloudera/hue,kawamon/hue,mapr/hue,cloudera/hue,dulems/hue,sanjeevtripurari/hue,mapr/hue,hdinsight/hue,hdinsight/hue,jounex/hue,epssy/hue,azureplus/hue,ahmed-mahran/hue,epssy/hue,yongshengwang/hue,MobinRanjbar/hue,kawamon/hue,yongshengwang/hue,kawamon/hue,xq262144/hue,GitHublong/hue,jayceyxc/hue,rahul67/hue,pratikmallya/hue,lumig242/Hue-Integration-with-CDAP,abhishek-ch/hue,abhishek-ch/hue,jjmleiro/hue,xiangel/hue,mapr/hue,cloudera/hue,cloudera/hue,jayceyxc/hue,kawamon/hue,epssy/hue,todaychi/hue,jayceyxc/hue,dulems/hue,azureplus/hue,yoer/hue,epssy/hue,sanjeevtripurari/hue,GitHublong/hue,lumig242/Hue-Integration-with-CDAP,Peddle/hue,epssy/hue,kawamon/hue,xq262144/hue,MobinRanjbar/hue,rahul67/hue,hdinsight/hue,dulems/hue,jjmleiro/hue,xiangel/hue,yongshengwang/hue,jayceyxc/hue,ChenJunor/hue,abhishek-ch/hue,cloudera/hue,todaychi/hue,sanjeevtripurari/hue,nvoron23/hue,todaychi/hue,dulems/hue,jjmleiro/hue,pratikmallya/hue,cloudera/hue,Peddle/hue,kawamon/hue,azureplus/hue,todaychi/hue,GitHublong/hue,todaychi/hue,MobinRanjbar/hue,azureplus/hue,xiangel/hue,mapr/hue,MobinRanjbar/hue,MobinRanjbar/hue,yoer/hue,yongshengwang/hue,xiangel/hue,lumig242/Hue-Integration-with-CDAP,Peddle/hue,Peddle/hue,ahmed-mahran/hue,jayceyxc/hue,azureplus/hue,nvoron23/hue,ahmed-mahran/hue,yongshengwang/hue,ChenJunor/hue,javachengwc/hue,x303597316/hue,azureplus/hue,cloudera/hue,lumig242/Hue-Integration-with-CDAP,fangxingli/hue,sanjeevtripurari/hue,kawamon/hue,jayceyxc/hue,todaychi/hue,jounex/hue,hdinsight/hue,ahmed-mahran/hue,jjmleiro/hue,rahul67/hue,pratikmallya/hue,ChenJunor/hue,xq262144/hue,xq262144/hue,pratikmallya/hue,vmax-feihu/hue,hdinsight/hue,javachengwc/hue,jounex/hue,javachengwc/hue,cloudera/hue,yoer/hue,x303597316/hue,jjmleiro/hue,Peddle/hue,kawamon/hue,vmax-feihu/hue,fangxingli/hue,ChenJunor/hue,xq262144/hue,Peddle/hue,vmax-feihu/hue,abhishek-ch/hue,pratikmallya/hue,x303597316/hue,fangxingli/hue,sanjeevtripurari/hue,epssy/hue,rahul67/hue,GitHublong/hue,nvoron23/hue,todaychi/hue,lumig242/Hue-Integration-with-CDAP,xiangel/hue,kawamon/hue,todaychi/hue,rahul67/hue,fangxingli/hue,fangxingli/hue,rahul67/hue,rahul67/hue,jounex/hue,x303597316/hue,hdinsight/hue,ahmed-mahran/hue,vmax-feihu/hue,yongshengwang/hue,cloudera/hue,abhishek-ch/hue,x303597316/hue,kawamon/hue,cloudera/hue,jayceyxc/hue,kawamon/hue,x303597316/hue,cloudera/hue,rahul67/hue,sanjeevtripurari/hue,nvoron23/hue,vmax-feihu/hue,lumig242/Hue-Integration-with-CDAP,epssy/hue,cloudera/hue,nvoron23/hue,x303597316/hue,nvoron23/hue,vmax-feihu/hue,yongshengwang/hue,vmax-feihu/hue,xq262144/hue,cloudera/hue,dulems/hue,hdinsight/hue,jayceyxc/hue,jayceyxc/hue,yongshengwang/hue,abhishek-ch/hue,abhishek-ch/hue,xq262144/hue,Peddle/hue,ChenJunor/hue,MobinRanjbar/hue,dulems/hue,jounex/hue,mapr/hue,azureplus/hue,dulems/hue,kawamon/hue,GitHublong/hue,cloudera/hue,javachengwc/hue,jjmleiro/hue,fangxingli/hue,xq262144/hue,pratikmallya/hue,nvoron23/hue,yoer/hue,MobinRanjbar/hue,javachengwc/hue,GitHublong/hue,fangxingli/hue,epssy/hue,vmax-feihu/hue,sanjeevtripurari/hue,pratikmallya/hue,mapr/hue,kawamon/hue,kawamon/hue,lumig242/Hue-Integration-with-CDAP,lumig242/Hue-Integration-with-CDAP,kawamon/hue,kawamon/hue,nvoron23/hue,jjmleiro/hue,ChenJunor/hue,x303597316/hue,ChenJunor/hue,hdinsight/hue,jounex/hue,azureplus/hue,sanjeevtripurari/hue,jjmleiro/hue,Peddle/hue,yoer/hue,javachengwc/hue,pratikmallya/hue,cloudera/hue,xiangel/hue,MobinRanjbar/hue,kawamon/hue,ahmed-mahran/hue,yoer/hue,ahmed-mahran/hue,xq262144/hue,yoer/hue,todaychi/hue,cloudera/hue,xiangel/hue,javachengwc/hue,cloudera/hue,lumig242/Hue-Integration-with-CDAP,abhishek-ch/hue,jjmleiro/hue,GitHublong/hue