Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/services/test_all.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.
 
 library test.services;
 
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
 import '../utils.dart';
 import 'completion/test_all.dart' as completion_all;
 import 'correction/test_all.dart' as correction_all;
 import 'dependencies/test_all.dart' as dependencies_all;
 import 'index/test_all.dart' as index_all;
 import 'linter/linter_test.dart' as linter_all;
 import 'refactoring/test_all.dart' as refactoring_all;
 import 'search/test_all.dart' as search_all;
 
 /// Utility for manually running all tests.
 main() {
   initializeTestEnvironment();
-  completion_all.main();
-  correction_all.main();
-  dependencies_all.main();
-  index_all.main();
-  linter_all.main();
-  refactoring_all.main();
-  search_all.main();
+  defineReflectiveSuite(() {
+    completion_all.main();
+    correction_all.main();
+    dependencies_all.main();
+    index_all.main();
+    linter_all.main();
+    refactoring_all.main();
+    search_all.main();
+  });
 }