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

masters/master.client.nacl.sdk/master.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright (c) 2012 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.
 
 # This is the buildmaster config file for the 'nacl' bot. It must
 # be installed as 'master.cfg' in your buildmaster's base directory
 # (although the filename can be changed with the --basedir option to
@@ skipping 18 matching lines @@
 
 import config
 import master_site_config
 
 ActiveMaster = master_site_config.NativeClientSDK
 
 # This is the dictionary that the buildmaster pays attention to. We also use
 # a shorter alias to save typing.
 c = BuildmasterConfig = {}
 
-config.DatabaseSetup(c, require_dbconfig=ActiveMaster.is_production_host)
+config.DatabaseSetup(c)
 
 ####### CHANGESOURCES
 
 def ChromiumNativeClientChangeFilter(commit_json, branch):
   if 'tree_diff' not in commit_json:
     return False
   for diff_entry in commit_json['tree_diff']:
     path = diff_entry['new_path']
     if (path == 'DEPS' or
         path.startswith('native_client_sdk/') or
@@ skipping 166 matching lines @@
 # Must come before AutoSetupMaster().
 c['buildbotURL'] = ActiveMaster.buildbot_url
 
 # Adds common status and tools to this master.
 master_utils.AutoSetupMaster(c, ActiveMaster,
                              order_console_by_time=True,
                              tagComparator=multi_poller.comparator,
                              public_html='../master.chromium/public_html',
                              templates=['./templates',
                                         '../master.client.nacl/templates'])