Fix services namespace clash.

Serve identically names services in different namespaces on different external IP addresses.

pkg/types/testing.go

@@ -0,0 +1,26 @@
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package types
+
+import "fmt"
+
+func NewNamespacedNameOrDie(namespace, name string) (ret NamespacedName) {
+	if len(namespace) == 0 || len(name) == 0 {
+		panic(fmt.Sprintf("invalid call to NewNamespacedNameOrDie(%q, %q)", namespace, name))
+	}
+	return NamespacedName{namespace, name}
+}