Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/analysis/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.analysis;
 
-import 'package:unittest/unittest.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../utils.dart';
 import 'get_errors_test.dart' as get_errors_test;
 import 'get_hover_test.dart' as get_hover_test;
 import 'get_navigation_test.dart' as get_navigation_test;
 import 'navigation_collector_test.dart' as navigation_collector_test;
 import 'notification_analysis_options_test.dart'
     as notification_analysis_options_test;
 import 'notification_analyzedFiles_test.dart'
     as notification_analyzedFiles_test;
 import 'notification_errors_test.dart' as notification_errors_test;
 import 'notification_highlights_test.dart' as notification_highlights_test;
 import 'notification_highlights_test2.dart' as notification_highlights_test2;
 import 'notification_implemented_test.dart' as notification_implemented_test;
 import 'notification_navigation_test.dart' as notification_navigation_test;
 import 'notification_occurrences_test.dart' as notification_occurrences_test;
 import 'notification_outline_test.dart' as notification_outline_test;
 import 'notification_overrides_test.dart' as notification_overrides_test;
 import 'set_priority_files_test.dart' as set_priority_files_test;
 import 'update_content_test.dart' as update_content_test;
 
 /**
  * Utility for manually running all tests.
  */
 main() {
   initializeTestEnvironment();
-  group('analysis', () {
+  defineReflectiveSuite(() {
     get_errors_test.main();
     get_hover_test.main();
     get_navigation_test.main();
     navigation_collector_test.main();
     notification_analysis_options_test.main();
     notification_analyzedFiles_test.main();
     notification_errors_test.main();
     notification_highlights_test.main();
     notification_highlights_test2.main();
     notification_implemented_test.main();
     notification_navigation_test.main();
     notification_occurrences_test.main();
     notification_outline_test.main();
     notification_overrides_test.main();
     set_priority_files_test.main();
     update_content_test.main();
-  });
+  }, name: 'analysis');
 }