up the timeout for heartbeat test processing
up the timeout for heartbeat test processing

probably fixes #472 (unless there is a hidden deadlock/... involved
or the recent PR #475 introduced a subtle change).

XuWanHong/cockroach-1,iqstack/cockroach,vivekmenezes/cockroach,XuWanHong/cockroach-1,cockroachdb/cockroach,jess-edwards/cockroach,hassyma/cockroach,glycerine/cockroach,slavau/cockroach,veteranlu/cockroach,ngaut/cockroach,c4pt0r/cockroach,es-chow/cockroach,glycerine/cockroach,arypurnomoz/cockroach,vaibhavarora/cockroach,freakynit/cockroach,fengshao0907/cockroach,briceburg/cockroach,cuongdo/cockroach,ngaut/cockroach,briceburg/cockroach,abhishekgahlot/cockroach,Kevin-GuanJian/cockroach,alunarbeach/cockroach,il9ue/cockroach,jamesgraves/cockroach,Abioy/cockroach,jmank88/cockroach,slavau/cockroach,linearb/cockroach,XisiHuang/cockroach,domluna/cockroach,yiixiansheng/cockroach,XuWanHong/cockroach-1,mbonaci/cockroach,maxlang/cockroach,marcuswestin/cockroach,bg451/cockroach,cockroachdb/cockroach,ngaut/cockroach,jgautheron/cockroach,fengshao0907/cockroach,SustainFund/cockroach,vivekmenezes/cockroach,jgautheron/cockroach,ngaut/cockroach,jgautheron/cockroach,iqstack/cockroach,es-chow/cockroach,yananzhi/cockroach,linearb/cockroach,Abioy/cockroach,jamesgraves/cockroach,XuWanHong/cockroach-1,paperstreet/cockroach,yosiat/cockroach,XuWanHong/cockroach-1,cuongdo/cockroach,veteranlu/cockroach,petermattis/cockroach,jess-edwards/cockroach,chrisseto/cockroach,slavau/cockroach,chrisseto/cockroach,chrisseto/cockroach,mbertschler/cockroach,maxlang/cockroach,domluna/cockroach,arjun4084346/cockroach,cockroachdb/cockroach,yosiat/cockroach,GokulSrinivas/cockroach,vaibhavarora/cockroach,yosiat/cockroach,abhishekgahlot/cockroach,cuongdo/cockroach,marcuswestin/cockroach,slavau/cockroach,nieyy/cockroach,arypurnomoz/cockroach,yananzhi/cockroach,chrisseto/cockroach,hassyma/cockroach,vaibhavarora/cockroach,nieyy/cockroach,maxlang/cockroach,mbertschler/cockroach,iqstack/cockroach,vaibhavarora/cockroach,il9ue/cockroach,c4pt0r/cockroach,jamesgraves/cockroach,mbonaci/cockroach,cockroachdb/cockroach,mbertschler/cockroach,ajayaa/cockroach,jamesgraves/cockroach,jess-edwards/cockroach,sunya123/cockroach,briceburg/cockroach,yiixiansheng/cockroach,es-chow/cockroach,veteranlu/cockroach,loucash/cockroach,iqstack/cockroach,yananzhi/cockroach,linearb/cockroach,yosiat/cockroach,fengshao0907/cockroach,mbertschler/cockroach,ngaut/cockroach,nieyy/cockroach,sunya123/cockroach,nieyy/cockroach,bg451/cockroach,domluna/cockroach,arypurnomoz/cockroach,loucash/cockroach,Abioy/cockroach,alex/cockroach,glycerine/cockroach,XuWanHong/cockroach-1,domluna/cockroach,mbertschler/cockroach,marcuswestin/cockroach,paperstreet/cockroach,ajayaa/cockroach,ajayaa/cockroach,linearb/cockroach,alunarbeach/cockroach,il9ue/cockroach,glycerine/cockroach,paperstreet/cockroach,sunya123/cockroach,bg451/cockroach,arypurnomoz/cockroach,nkhuyu/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,petermattis/cockroach,nkhuyu/cockroach,cockroachdb/cockroach,jgautheron/cockroach,nkhuyu/cockroach,Kevin-GuanJian/cockroach,sunya123/cockroach,marcuswestin/cockroach,sunya123/cockroach,glycerine/cockroach,es-chow/cockroach,petermattis/cockroach,XuWanHong/cockroach-1,vaibhavarora/cockroach,jgautheron/cockroach,briceburg/cockroach,arypurnomoz/cockroach,bg451/cockroach,iqstack/cockroach,maxlang/cockroach,alex/cockroach,Kevin-GuanJian/cockroach,es-chow/cockroach,vivekmenezes/cockroach,nieyy/cockroach,paperstreet/cockroach,arjun4084346/cockroach,freakynit/cockroach,hassyma/cockroach,yosiat/cockroach,marcuswestin/cockroach,yananzhi/cockroach,domluna/cockroach,vivekmenezes/cockroach,cuongdo/cockroach,Kevin-GuanJian/cockroach,jmank88/cockroach,SustainFund/cockroach,Kevin-GuanJian/cockroach,jess-edwards/cockroach,c4pt0r/cockroach,nkhuyu/cockroach,es-chow/cockroach,alunarbeach/cockroach,SustainFund/cockroach,mbonaci/cockroach,il9ue/cockroach,cuongdo/cockroach,Abioy/cockroach,hassyma/cockroach,ngaut/cockroach,alex/cockroach,paperstreet/cockroach,arjun4084346/cockroach,maxlang/cockroach,Abioy/cockroach,marcuswestin/cockroach,vivekmenezes/cockroach,briceburg/cockroach,sunya123/cockroach,loucash/cockroach,sunya123/cockroach,GokulSrinivas/cockroach,veteranlu/cockroach,nkhuyu/cockroach,Kevin-GuanJian/cockroach,glycerine/cockroach,bg451/cockroach,yosiat/cockroach,vaibhavarora/cockroach,glycerine/cockroach,arjun4084346/cockroach,hassyma/cockroach,bg451/cockroach,c4pt0r/cockroach,loucash/cockroach,petermattis/cockroach,cuongdo/cockroach,vaibhavarora/cockroach,jamesgraves/cockroach,yananzhi/cockroach,arjun4084346/cockroach,linearb/cockroach,nieyy/cockroach,veteranlu/cockroach,abhishekgahlot/cockroach,jess-edwards/cockroach,yiixiansheng/cockroach,yananzhi/cockroach,SustainFund/cockroach,yananzhi/cockroach,jmank88/cockroach,petermattis/cockroach,ajayaa/cockroach,nieyy/cockroach,marcuswestin/cockroach,arjun4084346/cockroach,Kevin-GuanJian/cockroach,chrisseto/cockroach,chrisseto/cockroach,mbonaci/cockroach,c4pt0r/cockroach,paperstreet/cockroach,loucash/cockroach,jgautheron/cockroach,il9ue/cockroach,cuongdo/cockroach,jamesgraves/cockroach,il9ue/cockroach,maxlang/cockroach,linearb/cockroach,arjun4084346/cockroach,domluna/cockr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