test that leader errors are set into response
test that leader errors are set into response

closes #1520

jgautheron/cockroach,arypurnomoz/cockroach,jgautheron/cockroach,vaibhavarora/cockroach,alunarbeach/cockroach,alex/cockroach,sunya123/cockroach,alunarbeach/cockroach,jess-edwards/cockroach,SustainFund/cockroach,jamesgraves/cockroach,vivekmenezes/cockroach,Abioy/cockroach,nkhuyu/cockroach,alex/cockroach,maxlang/cockroach,yosiat/cockroach,paperstreet/cockroach,chrisseto/cockroach,marcuswestin/cockroach,fengshao0907/cockroach,veteranlu/cockroach,alex/cockroach,vivekmenezes/cockroach,slavau/cockroach,cuongdo/cockroach,chrisseto/cockroach,hassyma/cockroach,cockroachdb/cockroach,briceburg/cockroach,linearb/cockroach,paperstreet/cockroach,jgautheron/cockroach,fengshao0907/cockroach,petermattis/cockroach,vaibhavarora/cockroach,yosiat/cockroach,fengshao0907/cockroach,arjun4084346/cockroach,marcuswestin/cockroach,linearb/cockroach,loucash/cockroach,alunarbeach/cockroach,cuongdo/cockroach,cuongdo/cockroach,briceburg/cockroach,maxlang/cockroach,jgautheron/cockroach,Abioy/cockroach,hassyma/cockroach,sunya123/cockroach,jamesgraves/cockroach,mbonaci/cockroach,bg451/cockroach,glycerine/cockroach,marcuswestin/cockroach,hassyma/cockroach,jgautheron/cockroach,nieyy/cockroach,abhishekgahlot/cockroach,ajayaa/cockroach,mbertschler/cockroach,alunarbeach/cockroach,SustainFund/cockroach,abhishekgahlot/cockroach,maxlang/cockroach,Abioy/cockroach,XisiHuang/cockroach,jmank88/cockroach,jmank88/cockroach,yiixiansheng/cockroach,glycerine/cockroach,ajayaa/cockroach,nkhuyu/cockroach,XisiHuang/cockroach,veteranlu/cockroach,loucash/cockroach,veteranlu/cockroach,cuongdo/cockroach,linearb/cockroach,XisiHuang/cockroach,glycerine/cockroach,slavau/cockroach,yiixiansheng/cockroach,paperstreet/cockroach,arypurnomoz/cockroach,petermattis/cockroach,paperstreet/cockroach,slavau/cockroach,mbonaci/cockroach,cockroachdb/cockroach,mbertschler/cockroach,chrisseto/cockroach,veteranlu/cockroach,nkhuyu/cockroach,vivekmenezes/cockroach,abhishekgahlot/cockroach,arypurnomoz/cockroach,jmank88/cockroach,glycerine/cockroach,sunya123/cockroach,SustainFund/cockroach,yosiat/cockroach,alunarbeach/cockroach,il9ue/cockroach,nieyy/cockroach,vivekmenezes/cockroach,XisiHuang/cockroach,jess-edwards/cockroach,ajayaa/cockroach,il9ue/cockroach,cockroachdb/cockroach,mbertschler/cockroach,mbertschler/cockroach,yiixiansheng/cockroach,slavau/cockroach,freakynit/cockroach,mbonaci/cockroach,veteranlu/cockroach,freakynit/cockroach,veteranlu/cockroach,jmank88/cockroach,vaibhavarora/cockroach,XisiHuang/cockroach,fengshao0907/cockroach,jamesgraves/cockroach,linearb/cockroach,arypurnomoz/cockroach,cuongdo/cockroach,sunya123/cockroach,mbonaci/cockroach,petermattis/cockroach,loucash/cockroach,loucash/cockroach,vaibhavarora/cockroach,petermattis/cockroach,ajayaa/cockroach,SustainFund/cockroach,maxlang/cockroach,yosiat/cockroach,vivekmenezes/cockroach,nkhuyu/cockroach,abhishekgahlot/cockroach,marcuswestin/cockroach,cockroachdb/cockroach,mbonaci/cockroach,jamesgraves/cockroach,GokulSrinivas/cockroach,mbonaci/cockroach,paperstreet/cockroach,cuongdo/cockroach,loucash/cockroach,hassyma/cockroach,jess-edwards/cockroach,cockroachdb/cockroach,maxlang/cockroach,jamesgraves/cockroach,arjun4084346/cockroach,GokulSrinivas/cockroach,arjun4084346/cockroach,petermattis/cockroach,nkhuyu/cockroach,SustainFund/cockroach,jmank88/cockroach,c4pt0r/cockroach,il9ue/cockroach,jess-edwards/cockroach,c4pt0r/cockroach,maxlang/cockroach,arjun4084346/cockroach,nieyy/cockroach,sunya123/cockroach,bg451/cockroach,arjun4084346/cockroach,jess-edwards/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,glycerine/cockroach,mbertschler/cockroach,marcuswestin/cockroach,SustainFund/cockroach,jgautheron/cockroach,sunya123/cockroach,jmank88/cockroach,paperstreet/cockroach,linearb/cockroach,abhishekgahlot/cockroach,petermattis/cockroach,ajayaa/cockroach,vaibhavarora/cockroach,glycerine/cockroach,sunya123/cockroach,glycerine/cockroach,GokulSrinivas/cockroach,nieyy/cockroach,bg451/cockroach,alex/cockroach,slavau/cockroach,jess-edwards/cockroach,marcuswestin/cockroach,GokulSrinivas/cockroach,GokulSrinivas/cockroach,freakynit/cockroach,vivekmenezes/cockroach,alex/cockroach,veteranlu/cockroach,Abioy/cockroach,glycerine/cockroach,freakynit/cockroach,maxlang/cockroach,marcuswestin/cockroach,hassyma/cockroach,hassyma/cockroach,arjun4084346/cockroach,briceburg/cockroach,ajayaa/cockroach,mbertschler/cockroach,il9ue/cockroach,cuongdo/cockroach,linearb/cockroach,briceburg/cockroach,c4pt0r/cockroach,linearb/cockroach,il9ue/cockroach,nieyy/cockroach,vaibhavarora/cockroach,yiixiansheng/cockroach,cockroachdb/cockroach,marcuswestin/cockroach,il9ue/cockroach,paperstreet/cockroach,GokulSrinivas/cockroach,Abioy/cockroach,alunarbeach/cockroach,chrisseto/cockroach,XisiHuang/cockroach,fengshao0907/cockroach,paperstreet/cockroach,jess-edwards/cockroach,arypurnomoz/cockroach,jamesgraves/cockroach,vaibhavarora/cockroach,nkhuyu/cockroach,veteranlu/cockroach,c4pt0r/cockroach,il9ue/cockroach,bg451/cockroach,yiixiansheng/cockroach,briceburg/cockroach,il9ue/cockroach,chrisseto/cockroach,freakynit/cockroach,vivekmenezes/cockroach,jamesgraves/cockroach,Abioy/cockroach,loucash/cockroach,cuongdo/cockroach,yiixiansheng/cockroach,slavau/cockroach,arypurnomoz/cockroach,briceburg/cockroach,mbertschler/cockroach,alex/cockroach,sunya123/cockroach,abhishekgahlot/cockroach,nieyy/cockroach,c4pt0r/cockroach,nieyy/cockroach,freakynit/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,maxlang/cockroach,fengshao0907/cockroach,petermattis/cockroach,petermattis/cockroach,yosiat/cockroach,cockroachdb/cockroach,c4pt0r/cockroach,chrisseto/cockroach,nieyy/cockroach,arjun4084346/cockroach,bg451/cockroach,bg451/cockroach,yosiat/cockroach,bg451/cockroach,jmank88/cockroach