op-guide: Remove guest role from v3 auth doc
op-guide: Remove guest role from v3 auth doc

cockroachdb/etcd,mickep76/etcd,akauppi/etcd,xiang90/etcd,mkumatag/etcd,xiang90/etcd,YuleiXiao/etcd,heyitsanthony/etcd,fanminshi/etcd,YuleiXiao/etcd,heyitsanthony/etcd,bluebreezecf/etcd,sebrandon1/etcd,dannysauer/etcd,handsomesun/etcd,glevand/coreos--etcd,yudai/etcd,coreos/etcd,sinsharat/etcd,ajityagaty/etcd,cockroachdb/etcd,sinsharat/etcd,joshix/etcd,vimalk78/etcd,li-ang/etcd,armstrongli/etcd,li-ang/etcd,lorneli/etcd,bluebreezecf/etcd,sebrandon1/etcd,vimalk78/etcd,mkumatag/etcd,armstrongli/etcd,rnaveiras/etcd,visheshnp/etcd,coreos/etcd,plasticbox/etcd,whuwxl/etcd,visheshnp/etcd,gyuho/etcd,handsomesun/etcd,fanminshi/etcd,mkumatag/etcd,etcd-io/etcd,mqliang/etcd,lorneli/etcd,rnaveiras/etcd,ajityagaty/etcd,etcd-io/etcd,a-robinson/etcd,akauppi/etcd,tguangch/etcd,bdarnell/etcd,ajityagaty/etcd,joshix/etcd,whuwxl/etcd,dannysauer/etcd,mickep76/etcd,mqliang/etcd,a-robinson/etcd,mqliang/etcd,tguangch/etcd,etcd-io/etcd,rnaveiras/etcd,yudai/etcd,gyuho/etcd,bdarnell/etcd,glevand/coreos--etcd,plasticbox/etcd