[test] Process to locally develop and upstream test262 tests

test/test262/archive.py

 #!/usr/bin/env python
 # Copyright 2016 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 import sys
 import tarfile
 import time
 
@@ skipping 11 matching lines @@
   if tar_info.name.startswith(os.path.join('data', '.git')) or \
       tar_info.name.startswith(os.path.join('harness', '.git')):
     return None
   else:
     tar_info.uname = tar_info.gname = "test262"
     return tar_info
 
 with tarfile.open('data.tar', 'w') as tar:
   tar.add('data', filter=filter_git)
   tar.add('harness', filter=filter_git)
+  tar.add('local-tests')
 
 # Workaround for GN. We can't specify the tarfile as output because it's
 # not in the product directory. Therefore we track running of this script
 # with an extra stamp file in the product directory.
 if len(sys.argv) == 2:
   with open(STAMP_FILE, 'w') as f:
     f.write(str(time.time()))