CHANGELOG: update for 12429
CHANGELOG: update for 12429

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