Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/src/utilities/test_all.dart

Index: pkg/analysis_server/test/src/utilities/test_all.dart
diff --git a/pkg/analysis_server/test/src/utilities/test_all.dart b/pkg/analysis_server/test/src/utilities/test_all.dart
index cdb4f8351c740b2511d2d8d37a96f9a548375a5f..639e0f69ae8ff7b0fb4e3e5b52f93419ec0a969b 100644
--- a/pkg/analysis_server/test/src/utilities/test_all.dart
+++ b/pkg/analysis_server/test/src/utilities/test_all.dart
@@ -4,6 +4,8 @@
 
 library test.services;
 
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
 import '../../utils.dart';
 import 'change_builder_core_test.dart' as change_builder_core_test;
 import 'change_builder_dart_test.dart' as change_builder_dart_test;
@@ -11,6 +13,8 @@ import 'change_builder_dart_test.dart' as change_builder_dart_test;
 /// Utility for manually running all tests.
 main() {
   initializeTestEnvironment();
-  change_builder_core_test.main();
-  change_builder_dart_test.main();
+  defineReflectiveSuite(() {
+    change_builder_core_test.main();
+    change_builder_dart_test.main();
+  });
 }