Re-enable test_insert_nulls
Re-enable test_insert_nulls

Change-Id: I737e3795c38ba00bf4e981b513cf211e26ddd352
Reviewed-on: http://gerrit.ent.cloudera.com:8080/352
Reviewed-by: Lenni Kuff <724b7df200764f5dc1b723c05ee6c6adabd11bb1@cloudera.com>
Tested-by: jenkins

henryr/Impala,bratatidas9/Impala-1,rampage644/impala-cut,ibmsoe/ImpalaPPC,cloudera/recordservice,scalingdata/Impala,grundprinzip/Impala,cchanning/Impala,rampage644/impala-cut,bowlofstew/Impala,lirui-intel/Impala,bratatidas9/Impala-1,bowlofstew/Impala,caseyching/Impala,placrosse/ImpalaToGo,grundprinzip/Impala,cchanning/Impala,gerashegalov/Impala,henryr/Impala,henryr/Impala,bowlofstew/Impala,lirui-intel/Impala,brightchen/Impala,tempbottle/Impala,lirui-intel/Impala,grundprinzip/Impala,placrosse/ImpalaToGo,tempbottle/Impala,gerashegalov/Impala,AtScaleInc/Impala,brightchen/Impala,scalingdata/Impala,mapr/impala,scalingdata/Impala,henryr/Impala,grundprinzip/Impala,ImpalaToGo/ImpalaToGo,caseyching/Impala,cchanning/Impala,lnliuxing/Impala,XiaominZhang/Impala,kapilrastogi/Impala,cloudera/recordservice,placrosse/ImpalaToGo,henryr/Impala,cloudera/recordservice,tempbottle/Impala,lnliuxing/Impala,tempbottle/Impala,lirui-intel/Impala,henryr/Impala,gistic/PublicSpatialImpala,kapilrastogi/Impala,lirui-intel/Impala,XiaominZhang/Impala,lnliuxing/Impala,brightchen/Impala,brightchen/Impala,caseyching/Impala,AtScaleInc/Impala,ibmsoe/ImpalaPPC,bratatidas9/Impala-1,cloudera/recordservice,theyaa/Impala,bowlofstew/Impala,bratatidas9/Impala-1,placrosse/ImpalaToGo,lnliuxing/Impala,ibmsoe/ImpalaPPC,scalingdata/Impala,ibmsoe/ImpalaPPC,lnliuxing/Impala,rampage644/impala-cut,bratatidas9/Impala-1,tempbottle/Impala,XiaominZhang/Impala,theyaa/Impala,XiaominZhang/Impala,theyaa/Impala,lnliuxing/Impala,caseyching/Impala,kapilrastogi/Impala,rampage644/impala-cut,theyaa/Impala,cloudera/recordservice,ImpalaToGo/ImpalaToGo,cloudera/recordservice,placrosse/ImpalaToGo,andybab/Impala,cloudera/recordservice,scalingdata/Impala,AtScaleInc/Impala,gistic/PublicSpatialImpala,andybab/Impala,rdblue/Impala,scalingdata/Impala,XiaominZhang/Impala,lnliuxing/Impala,gerashegalov/Impala,ibmsoe/ImpalaPPC,cgvarela/Impala,ibmsoe/ImpalaPPC,cgvarela/Impala,gerashegalov/Impala,AtScaleInc/Impala,AtScaleInc/Impala,lirui-intel/Impala,bratatidas9/Impala-1,AtScaleInc/Impala,bowlofstew/Impala,theyaa/Impala,andybab/Impala,tempbottle/Impala,ImpalaToGo/ImpalaToGo,gistic/PublicSpatialImpala,mapr/impala,ImpalaToGo/ImpalaToGo,kapilrastogi/Impala,cgvarela/Impala,brightchen/Impala,ibmsoe/ImpalaPPC,rdblue/Impala,cgvarela/Impala,caseyching/Impala,gistic/PublicSpatialImpala,rampage644/impala-cut,gerashegalov/Impala,brightchen/Impala,ImpalaToGo/ImpalaToGo,brightchen/Impala,grundprinzip/Impala,gistic/PublicSpatialImpala,mapr/impala,gistic/PublicSpatialImpala,bratatidas9/Impala-1,XiaominZhang/Impala,rdblue/Impala,kapilrastogi/Impala,mapr/impala,ImpalaToGo/ImpalaToGo,cgvarela/Impala,XiaominZhang/Impala,cchanning/Impala,kapilrastogi/Impala,tempbottle/Impala,theyaa/Impala,bowlofstew/Impala,caseyching/Impala,placrosse/ImpalaToGo,caseyching/Impala,gerashegalov/Impala,rampage644/impala-cut,cchanning/Impala,andybab/Impala,theyaa/Impala,grundprinzip/Impala,cgvarela/Impala,cchanning/Impala,gerashegalov/Impala,rdblue/Impala,lirui-intel/Impala,cchanning/Impala,andybab/Impala,cgvarela/Impala,rdblue/Impala,andybab/Impala,rdblue/Impala,rdblue/Impala,mapr/impala,kapilrastogi/Impala,bowlofstew/Impala