Remove test keys from images we test with in the test harness.

bin/au_test_harness/au_test.py

 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Module containing a test suite that is run to test auto updates."""
 
 import os
 import tempfile
 import time
 import unittest
 
 import cros_build_lib as cros_lib
 
 import cros_test_proxy
 import dummy_au_worker
 import real_au_worker
 import vm_au_worker
 
 
 class AUTest(unittest.TestCase):
   """Test harness that uses an au_worker to perform and validate updates.
 
   Defines a test suite that is run using an au_worker.  An au_worker can
   be created to perform and validates updates on both virtual and real devices.
   See documentation for au_worker for more information.
   """
   test_results_root = None
+  public_key_managers = []
 
   @classmethod
   def ProcessOptions(cls, options, use_dummy_worker):
     """Processes options for the test suite and sets up the worker class.
 
     Args:
       options: options class to be parsed from main class.
       use_dummy_worker: If True, use a dummy_worker_class rather than deriving
         one from options.type.
     """
@@ skipping 240 matching lines @@
     url = 'http://gsdview.appspot.com/chromeos-localmirror/' \
           'autest-images/corrupted_image.gz'
     payload = os.path.join(self.download_folder, 'corrupted.gz')
 
     # Read from the URL and write to the local file
     urllib.urlretrieve(url, payload)
 
     # This update is expected to fail...
     expected_msg = 'zlib inflate() error:-3'
     self.AttemptUpdateWithPayloadExpectedFailure(payload, expected_msg)