test: use go vet shadow feature instead of go-nyet
test: use go vet shadow feature instead of go-nyet

Use official support instead of home-made one.

xiang90/etcd,arthurcolle/etcd,yichengq/etcd,glevand/coreos--etcd,jeremyeder/etcd,cognusion/etcd,betawaffle/etcd,jlamillan/etcd,svdata/etcd,ktateish/etcd,msanterre/etcd,westhood/etcd,wantonsolutions/dinv-etcd,heyitsanthony/etcd,beni55/etcd,hroyrh/etcd,visheshnp/etcd,improbable-io/etcd,ajityagaty/etcd,raoofm/etcd,vimalk78/etcd,cchamplin/etcd,bdarnell/etcd,giantswarm/etcd,jonboulle/etcd,siddontang/etcd,freeloop1114/etcd,xychu/etcd,qqsun8819/etcd,pauldallen/etcd,jchauncey/etcd,shawnps/etcd,handsomesun/etcd,fanminshi/etcd,xdlinear/etcd,combk8s/etcd,sinsharat/etcd,hongbinz/etcd,wowsoso/etcd,Timer/etcd,rchicoli/etcd,xdlinear/etcd,chenbaihu/etcd,bluebreezecf/etcd,onlyjob/etcd,freeloop1114/etcd,rchicoli/etcd,delkyd/etcd,jchauncey/etcd,yudai/etcd,gouyang/etcd,plasticbox/etcd,chipironcin/etcd,lumjjb/etcd,zaphod-concur/etcd,swingbach/etcd,sebrandon1/etcd,betawaffle/etcd,Eagle-X/etcd,YuleiXiao/etcd,mqliang/etcd,zaphod-concur/etcd,ajityagaty/etcd,lorneli/etcd,xychu/etcd,iamqizhao/etcd,a-robinson/etcd,hongchaodeng/etcd,Winslett/etcd,visheshnp/etcd,insequent/etcd,glycerine/etcd,gyuho/etcd,cockroachdb/etcd,Winslett/etcd,luxas/etcd,iamqizhao/etcd,nekto0n/etcd,StorReduce/etcd,mqliang/etcd,TheHippo/etcd,mkumatag/etcd,lumjjb/etcd,vimalk78/etcd,chenbaihu/etcd,gityf/etcd,tguangch/etcd,kkaneda/etcd,glycerine/etcd,sinsharat/etcd,dnaeon/etcd,mkumatag/etcd,buaazp/etcd,TheHippo/etcd,etcd-io/etcd,StorReduce/etcd,yudai/etcd,Yhgenomics/etcd,armstrongli/etcd,li-ang/etcd,qqsun8819/etcd,a-robinson/etcd,OyTao/etcd_learning,heyitsanthony/etcd,buaazp/etcd,jefby/etcd,akauppi/etcd,jonboulle/etcd,msanterre/etcd,linuxcer/etcd,endocode/etcd,hroyrh/etcd,rnaveiras/etcd,wowsoso/etcd,etcd-io/etcd,cockroachdb/etcd,achanda/etcd,purpleidea/etcd,kkaneda/etcd,honeyqa/etcd,OyTao/etcd_learning,fanminshi/etcd,mqliang/etcd,oscarrr110/etcd,tguangch/etcd,tamird/etcd,sayden/etcd,hongbinz/etcd,dnaeon/etcd,nekto0n/etcd,wantonsolutions/dinv-etcd,luxas/etcd,CrazyJvm/etcd,arthurcolle/etcd,mickep76/etcd,onlyjob/etcd,HideoYamauchi/etcd,gae123/etcd,rnaveiras/etcd,gouyang/etcd,handsomesun/etcd,bdarnell/etcd,shawnps/etcd,mickep76/etcd,endocode/etcd,mike-lerch/etcd,beni55/etcd,pauldallen/etcd,plasticbox/etcd,dannysauer/etcd,insequent/etcd,whuwxl/etcd,gae123/etcd,Timer/etcd,giantswarm/etcd,sofuture/etcd,xiang90/etcd,mike-lerch/etcd,ravigadde/etcd,joshix/etcd,fasaxc/etcd,armstrongli/etcd,tamird/etcd,cognusion/etcd,YuleiXiao/etcd,improbable-io/etcd,ajityagaty/etcd,svdata/etcd,glevand/coreos--etcd,li-ang/etcd,CrazyJvm/etcd,joshix/etcd,linuxcer/etcd,raoofm/etcd,HideoYamauchi/etcd,swingbach/etcd,akauppi/etcd,cchamplin/etcd,fgbreel/etcd,gyuho/etcd,chipironcin/etcd,jlamillan/etcd,fasaxc/etcd,ktateish/etcd,fgbreel/etcd,Eagle-X/etcd,westhood/etcd,hongchaodeng/etcd,coreos/etcd,bluebreezecf/etcd,dannysauer/etcd,lorneli/etcd,siddontang/etcd,jeremyeder/etcd,asim/etcd,wantonsolutions/dinv-etcd,fasaxc/etcd,sofuture/etcd,purpleidea/etcd,oscarrr110/etcd,jefby/etcd,honeyqa/etcd,asim/etcd,sayden/etcd,coreos/etcd,delkyd/etcd,rnaveiras/etcd,Yhgenomics/etcd,combk8s/etcd,mkumatag/etcd,gityf/etcd,whuwxl/etcd,yichengq/etcd,sebrandon1/etcd,achanda/etcd,etcd-io/etcd,ravigadde/etcd