CHANGELOG: update for 11990
CHANGELOG: update for 11990

ajityagaty/etcd,rnaveiras/etcd,li-ang/etcd,mkumatag/etcd,dannysauer/etcd,coreos/etcd,dannysauer/etcd,mqliang/etcd,li-ang/etcd,etcd-io/etcd,etcd-io/etcd,ajityagaty/etcd,mqliang/etcd,rnaveiras/etcd,etcd-io/etcd,cockroachdb/etcd,gyuho/etcd,mqliang/etcd,rnaveiras/etcd,gyuho/etcd,cockroachdb/etcd,mkumatag/etcd,coreos/etcd,mkumatag/etcd,ajityagaty/etcd