Updated various gardening data, and ignoring gardening/temp.

tools/gardening/bin/create_shard_data.dart

 // Copyright (c) 2017, 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.
 
 // Outputs source code for `part` used by `shard2group.dart`. Usage:
 // `dart bin/create_shard_groups.dart source.html >lib/src/shard_data.dart`.
 
 import 'dart:io';
 import 'dart:math' as math;
 
@@ skipping 89 matching lines @@
 const Map<String, List<String>> shardGroups = const {""");
   for (int i = 0; i < groupCount; i++) {
     print("  '${groups[i]}': const <String>[");
     for (String shard in shards[i]) {
       print("    '$shard',");
     }
     print("  ],");
   }
   print('};');
 }