update .test_config to not run transformed tests, see https://github.com/dart-lang/package-bots/issues/6
update .test_config to not run transformed tests, see https://github.com/dart-lang/package-bots/issues/6

dam0vm3nt/polymer-dart,dart-archive/polymer-dart,dart-archive/polymer-dart,dam0vm3nt/polymer-dart