Use package:test_reflective_loader instead of reflective_tests.

pkg/analysis_server/test/integration/server/get_version_test.dart

Index: pkg/analysis_server/test/integration/server/get_version_test.dart
diff --git a/pkg/analysis_server/test/integration/server/get_version_test.dart b/pkg/analysis_server/test/integration/server/get_version_test.dart
index 779aff160f300670466e1a3985ba15c2dd18288d..7f7b5296e8e87275f63bc8f7bb1f0b6cef180d56 100644
--- a/pkg/analysis_server/test/integration/server/get_version_test.dart
+++ b/pkg/analysis_server/test/integration/server/get_version_test.dart
@@ -4,11 +4,12 @@
 
 library test.integration.server.get.version;
 
-import '../../reflective_tests.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
 import '../integration_tests.dart';
 
 main() {
-  runReflectiveTests(Test);
+  defineReflectiveTests(Test);
 }
 
 @reflectiveTest