etcdctl/ctlv3: document auth,user,role
etcdctl/ctlv3: document auth,user,role

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