etcdctl: slightly enhance output of role revoke-permission
etcdctl: slightly enhance output of role revoke-permission

wantonsolutions/dinv-etcd,heyitsanthony/etcd,joshix/etcd,ajityagaty/etcd,akauppi/etcd,lumjjb/etcd,lorneli/etcd,hongchaodeng/etcd,luxas/etcd,fanminshi/etcd,nekto0n/etcd,visheshnp/etcd,armstrongli/etcd,li-ang/etcd,handsomesun/etcd,swingbach/etcd,lumjjb/etcd,swingbach/etcd,mickep76/etcd,YuleiXiao/etcd,plasticbox/etcd,sinsharat/etcd,coreos/etcd,glevand/coreos--etcd,xiang90/etcd,rchicoli/etcd,jlamillan/etcd,lorneli/etcd,jonboulle/etcd,etcd-io/etcd,chipironcin/etcd,insequent/etcd,jonboulle/etcd,StorReduce/etcd,li-ang/etcd,endocode/etcd,mkumatag/etcd,gyuho/etcd,OyTao/etcd_learning,rnaveiras/etcd,mqliang/etcd,ajityagaty/etcd,OyTao/etcd_learning,yudai/etcd,linuxcer/etcd,coreos/etcd,whuwxl/etcd,tguangch/etcd,sofuture/etcd,vimalk78/etcd,qqsun8819/etcd,mickep76/etcd,hongchaodeng/etcd,glycerine/etcd,westhood/etcd,a-robinson/etcd,dannysauer/etcd,jlamillan/etcd,handsomesun/etcd,glevand/coreos--etcd,etcd-io/etcd,bdarnell/etcd,chipironcin/etcd,YuleiXiao/etcd,xiang90/etcd,armstrongli/etcd,luxas/etcd,westhood/etcd,ktateish/etcd,CrazyJvm/etcd,dannysauer/etcd,zaphod-concur/etcd,wantonsolutions/dinv-etcd,nekto0n/etcd,purpleidea/etcd,visheshnp/etcd,wantonsolutions/dinv-etcd,mkumatag/etcd,bdarnell/etcd,vimalk78/etcd,sinsharat/etcd,ktateish/etcd,bluebreezecf/etcd,sebrandon1/etcd,insequent/etcd,mqliang/etcd,fanminshi/etcd,sebrandon1/etcd,akauppi/etcd,rchicoli/etcd,heyitsanthony/etcd,ajityagaty/etcd,cockroachdb/etcd,yudai/etcd,plasticbox/etcd,endocode/etcd,a-robinson/etcd,rnaveiras/etcd,mkumatag/etcd,purpleidea/etcd,StorReduce/etcd,glycerine/etcd,cockroachdb/etcd,qqsun8819/etcd,sofuture/etcd,rnaveiras/etcd,ravigadde/etcd,tguangch/etcd,mqliang/etcd,linuxcer/etcd,CrazyJvm/etcd,whuwxl/etcd,joshix/etcd,etcd-io/etcd,bluebreezecf/etcd,zaphod-concur/etcd,ravigadde/etcd,gyuho/etcd