Rename test (#2516)

diff --git a/packages/e2e/example/test_driver/failure_e2e.dart b/packages/e2e/example/test_driver/failure.dart
similarity index 100%
rename from packages/e2e/example/test_driver/failure_e2e.dart
rename to packages/e2e/example/test_driver/failure.dart
diff --git a/packages/e2e/example/test_driver/failure_e2e_test.dart b/packages/e2e/example/test_driver/failure_test.dart
similarity index 100%
rename from packages/e2e/example/test_driver/failure_e2e_test.dart
rename to packages/e2e/example/test_driver/failure_test.dart