Add zpeng@ to banners WATCHLISTS

WATCHLISTS

 # 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.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 1436 matching lines @@
     'autofill': ['estade+watch@chromium.org',
                  'jdonnelly+autofillwatch@chromium.org',
                  'rouslan+autofill@chromium.org',
                  'vabr+watchlistautofill@chromium.org'],
     'automation': ['robertshield@chromium.org'],
     'background_sync': ['chasej+watch@chromium.org',
                         'iclelland+watch@chromium.org',
                         'jkarlin+watch@chromium.org',
                         'peter@chromium.org'],
     'banners': ['dominickn+watch@chromium.org',
-                'pkotwicz+watch@chromium.org'],
+                'pkotwicz+watch@chromium.org',
+                'zpeng+watch@chromium.org'],
     'base_allocator': ['dmikurube@chromium.org',
                        'wfh+watch@chromium.org'],
     'base_memory': ['gavinp+memory@chromium.org'],
     'base_task_scheduler': ['fdoray+watch@chromium.org',
                             'gab+watch@chromium.org',
                             'robliao+watch@chromium.org'],
     'base_win': ['grt+watch@chromium.org',
                  'wfh+watch@chromium.org'],
     'battery_status': ['timvolodine@chromium.org'],
     'blimp' : ['anandc+watch-blimp@chromium.org',
@@ skipping 528 matching lines @@
                          'raymes+watch@chromium.org'],
     'windows_sandboxing': ['pennymac+watch@chromium.org',
                            'wfh+watch@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
     'xml': ['dominicc+watchlist@chromium.org'],
     'zoom': ['wjmaclean@chromium.org'],
   },
 }