add vendoring with go dep

vendor/github.com/vmware/govmomi/govc/main_test.go

@@ -0,0 +1,38 @@
+/*
+Copyright (c) 2015 VMware, 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 main
+
+import (
+	"context"
+	"flag"
+	"testing"
+
+	"github.com/vmware/govmomi/govc/cli"
+)
+
+func TestMain(t *testing.T) {
+	// Execute flag registration for every command to verify there are no
+	// commands with flag name collisions
+	for _, cmd := range cli.Commands() {
+		fs := flag.NewFlagSet("", flag.ContinueOnError)
+
+		// Use fresh context for every command
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		cmd.Register(ctx, fs)
+	}
+}