Roll Observatory packages and add a roll script

packages/analyzer/test/instrumentation/test_all.dart

Index: packages/analyzer/test/instrumentation/test_all.dart
diff --git a/packages/analyzer/test/instrumentation/test_all.dart b/packages/analyzer/test/instrumentation/test_all.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f9bfc2d9e4c3ee027f88b851b7077d8547513e46
--- /dev/null
+++ b/packages/analyzer/test/instrumentation/test_all.dart
@@ -0,0 +1,17 @@
+// Copyright (c) 2015, 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.instrumentation.test_all;
+
+import 'package:unittest/unittest.dart';
+
+import 'instrumentation_test.dart' as instrumentation_test;
+
+/// Utility for manually running all tests.
+main() {
+  groupSep = ' | ';
+  group('instrumentation', () {
+    instrumentation_test.main();
+  });
+}