Use pub_server package

pkg/pub_server/test/shelf_pubserver_test.dart

Index: pkg/pub_server/test/shelf_pubserver_test.dart
diff --git a/pkg/pubserver/test/shelf_pubserver_test.dart b/pkg/pub_server/test/shelf_pubserver_test.dart
similarity index 99%
rename from pkg/pubserver/test/shelf_pubserver_test.dart
rename to pkg/pub_server/test/shelf_pubserver_test.dart
index 036ba91bddbe0c8785b60ee692c8b210012304a0..a0fef302930e1e141ae4cb93b4d0dda4d5e45441 100644
--- a/pkg/pubserver/test/shelf_pubserver_test.dart
+++ b/pkg/pub_server/test/shelf_pubserver_test.dart
@@ -2,14 +2,14 @@
 // 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.
 
-library pubserver.shelf_pubserver_test;
+library pub_server.shelf_pubserver_test;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:shelf/shelf.dart' as shelf;
-import 'package:pubserver/repository.dart';
-import 'package:pubserver/shelf_pubserver.dart';
+import 'package:pub_server/repository.dart';
+import 'package:pub_server/shelf_pubserver.dart';
 import 'package:unittest/unittest.dart';
 
 class RepositoryMock implements PackageRepository {