Roll Observatory packages and add a roll script

packages/quiver/test/collection/all_tests.dart

+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+library quiver.collection.all_tests;
+
+import 'bimap_test.dart' as bimap;
+import 'collection_test.dart' as collection;
+import 'lru_map_test.dart' as lru_map;
+import 'multimap_test.dart' as multimap;
+import 'treeset_test.dart' as treeset;
+import 'delegates/iterable_test.dart' as iterable;
+import 'delegates/list_test.dart' as list;
+import 'delegates/map_test.dart' as map;
+import 'delegates/queue_test.dart' as queue;
+import 'delegates/set_test.dart' as set;
+
+main() {
+  bimap.main();
+  collection.main();
+  lru_map.main();
+  multimap.main();
+  iterable.main();
+  list.main();
+  map.main();
+  queue.main();
+  set.main();
+  treeset.main();
+}