tests/e2e: skip metrics tests for now

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>

tests/e2e/metrics_test.go

@@ -37,6 +37,8 @@ func TestV3MetricsInsecure(t *testing.T) {
 }
 
 func metricsTest(cx ctlCtx) {
+	cx.t.Skip()
+
 	if err := ctlV3Put(cx, "k", "v", ""); err != nil {
 		cx.t.Fatal(err)
 	}