Update copyright notice from Swarming to LUCI; add AUTHORS and CONTRIBUTORS.

client/tests/run_isolated_smoke_test.py

 #!/usr/bin/env python
-# Copyright 2012 The Swarming Authors. All rights reserved.
-# Use of this source code is governed under the Apache License, Version 2.0 that
-# can be found in the LICENSE file.
+# Copyright 2012 The LUCI Authors. All rights reserved.
+# Use of this source code is governed by the Apache v2.0 license that can be
+# found in the LICENSE file.
 
 import json
 import logging
 import os
 import subprocess
 import sys
 import unittest
 
 ROOT_DIR = unicode(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.insert(0, ROOT_DIR)
@@ skipping 367 matching lines @@
     cached_file_path = self._test_corruption_common(
         CONTENTS['file1.txt'][:-1] + ' ')
     # TODO(maruel): This corruption is NOT detected.
     # This needs to be fixed.
     self.assertNotEqual(CONTENTS['file1.txt'], read_content(cached_file_path))
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   test_utils.main()