Don't require a .dbconfig file on any masters.

masters/master.chromium.lkgr/master.cfg

 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from buildbot.status.mail import MailNotifier
 
 from master import master_utils
 from master import slaves_list
 
 import config
 import master_site_config
 
 ActiveMaster = master_site_config.ChromiumLKGR
 
 c = BuildmasterConfig = {}
 c['change_source'] = []
 c['schedulers'] = []
 c['builders'] = []
 c['status'] = []
 
-config.DatabaseSetup(c, require_dbconfig=ActiveMaster.is_production_host)
+config.DatabaseSetup(c)
 
 import master_lkgr_cfg
 
 master_lkgr_cfg.Update(config, ActiveMaster, c)
 
 c['logCompressionLimit'] = False
 c['projectName'] = ActiveMaster.project_name
 c['projectURL'] = config.Master.project_url
 # Must come before AutoSetupMaster().
 c['buildbotURL'] = ActiveMaster.buildbot_url
@@ skipping 26 matching lines @@
     sendToInterestedUsers=False))
 
 c['status'].append(MailNotifier(
       fromaddr=ActiveMaster.from_address,  # Reply-To address
       mode='failing',
       relayhost=config.Master.smtp,
       subject='Build failure on %(builder)s',
       extraRecipients=['syzygy-team@google.com'],
       sendToInterestedUsers=False,
       builders=['Win SyzyASAN LKGR']))