Roll Observatory packages and add a roll script

packages/quiver/test/streams/all_tests.dart

Index: packages/quiver/test/streams/all_tests.dart
diff --git a/quiver/lib/cache.dart b/packages/quiver/test/streams/all_tests.dart
similarity index 67%
rename from quiver/lib/cache.dart
rename to packages/quiver/test/streams/all_tests.dart
index b962bcead54cc55a96ea931bd27450f592b0a4f1..3ae437cf709608d0aaf66813c289da613b82dc88 100644
--- a/quiver/lib/cache.dart
+++ b/packages/quiver/test/streams/all_tests.dart
@@ -12,12 +12,16 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-library quiver.cache;
+library quiver.streams.all_tests;
 
-import 'dart:async';
-import 'dart:collection';
+import 'collect_test.dart' as collect;
+import 'concat_test.dart' as concat;
+import 'enumerate_test.dart' as enumerate;
+import 'streambuffer_test.dart' as streambuffer;
 
-import 'package:quiver/collection.dart' show LruMap;
-
-part 'src/cache/cache.dart';
-part 'src/cache/map_cache.dart';
+main() {
+  collect.main();
+  concat.main();
+  enumerate.main();
+  streambuffer.main();
+}