cros_image_to_target: use newstyle updates, followup after switching --nooldstyle to be the default

bin/cros_image_to_target.py

 #!/usr/bin/python
 #
 # Copyright (c) 2010 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.
 
 """Create and copy update image to target host.
 
 auto-update and devserver change out from beneath us often enough
 that despite having to duplicate a litte code, it seems that the
@@ skipping 432 matching lines @@
   xmlns = 'http://www.google.com/update2/response'
   payload_success_template = """<?xml version="1.0" encoding="UTF-8"?>
     <gupdate xmlns="%s" protocol="2.0">
     <daystart elapsed_seconds="%s"/>
     <app appid="{%s}" status="ok">
       <ping status="ok"/>
       <updatecheck
       codebase="%s"
       hash="%s"
       sha256="%s"
+      IsDelta="true"
       needsadmin="false"
       size="%s"
       status="ok"/>
     </app>
     </gupdate>
   """
   payload_failure_template = """<?xml version="1.0" encoding="UTF-8"?>
       <gupdate xmlns="%s" protocol="2.0">
         <daystart elapsed_seconds="%s"/>
         <app appid="{%s}" status="ok">
@@ skipping 251 matching lines @@
 
   if child:
     os.kill(child, 15)
 
   cros_env.Info('Server exiting with status %d' % exit_status)
   sys.exit(exit_status)
 
 
 if __name__ == '__main__':
   main(sys.argv)