Add test image for networking related tests

test/images/net/common/common.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+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 common
+
+import "log"
+
+// Runner is a client or server to run.
+type Runner interface {
+	// NewOptions returns a new empty options structure to be populated
+	// by from the JSON -options argument.
+	NewOptions() interface{}
+	// Run the client or server, taking in options. This execute the
+	// test code.
+	Run(logger *log.Logger, options interface{}) error
+}