clientv3/integration: simple namespace wrapper tests
clientv3/integration: simple namespace wrapper tests

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