Fix/remove broken: TestMetricDbSizeDefragDebugging
Fix/remove broken: TestMetricDbSizeDefragDebugging

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