Add appengine/gcloud/mustache dependencies.

pkg/appengine/test/integration/raw_datastore_v3_test.dart

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:appengine/src/appengine_context.dart';
+import 'package:appengine/src/api_impl/raw_datastore_v3_impl.dart';
+import 'package:appengine/src/protobuf_api/rpc/rpc_service_remote_api.dart';
+
+import 'raw_datastore_test_impl.dart';
+
+main() {
+  var rpcService = new RPCServiceRemoteApi('127.0.0.1', 4444);
+  var appengineContext = new AppengineContext(
+      'dev', 'test-application', 'test-version', null, null, null);
+  var datastore =
+      new DatastoreV3RpcImpl(rpcService, appengineContext, '<invalid-ticket>');
+
+  runTests(datastore);
+}