Configure alex branch to not push anything but also uprev.

buildbot/cbuildbot_config.py

 # 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.
 
 """Dictionary of configuration types for cbuildbot.
 
 Each dictionary entry is in turn a dictionary of config_param->value.
 
 config_param's:
 board -- The board of the image to build.
@@ skipping 123 matching lines @@
   'master' : True,
 
   'uprev' : True,
   'rev_overlays': 'both',
   'push_overlays': 'private',
 })
 
 config['x86-alex-pre-flight-branch'] = default.copy()
 config['x86-alex-pre-flight-branch'].update({
   'board' : 'x86-alex',
-  'master' : True,
+  'master' : False,
 
   'uprev' : True,
   'rev_overlays': 'both',
   'push_overlays': None,
 })
 
 config['x86-mario-pre-flight-branch'] = default.copy()
 config['x86-mario-pre-flight-branch'].update({
   'board' : 'x86-mario',
   'master' : True,
@@ skipping 75 matching lines @@
 config['x86-generic-full'].update(full)
 config['x86-generic-full'].update({
   'board' : 'x86-generic',
 })
 
 config['x86-pineview-full'] = default.copy()
 config['x86-pineview-full'].update(full)
 config['x86-pineview-full'].update({
   'board' : 'x86-pineview',
 })