Comment out calls to httptest.Server.Close() to work around

https://github.com/golang/go/issues/12262 . See #19254 for
more details. This change should be reverted when we upgrade
to Go 1.6.

pkg/controller/controller_utils_test.go

@@ -189,7 +189,8 @@ func TestCreatePods(t *testing.T) {
 		ResponseBody: string(body),
 	}
 	testServer := httptest.NewServer(&fakeHandler)
-	defer testServer.Close()
+	// TODO: Uncomment when fix #19254
+	// defer testServer.Close()
 	client := client.NewOrDie(&client.Config{Host: testServer.URL, GroupVersion: testapi.Default.GroupVersion()})
 
 	podControl := RealPodControl{