Add alexmos@ to navigation watchlists.

Change-Id: Icdbad110266ba00386486355ec996c45d8660869
Reviewed-on: https://chromium-review.googlesource.com/1050792Reviewed-by: Charlie Reis <creis@chromium.org>
Commit-Queue: Alex Moshchuk <alexmos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557020}

WATCHLISTS

@@ -2180,7 +2180,8 @@
     'nacl': ['native-client-reviews@googlegroups.com'],
     'native_client_sdk': ['binji+watch@chromium.org',
                           'sbc@chromium.org'],
-    'navigation': ['creis+watch@chromium.org',
+    'navigation': ['alexmos+watch@chromium.org',
+                   'creis+watch@chromium.org',
                    'nasko+codewatch@chromium.org'],
     'net': ['cbentzel+watch@chromium.org',
             'net-reviews@chromium.org'],
@@ -2276,6 +2277,7 @@
     'settings_reset_prompt': ['alito+watch@chromium.org'],
     'site_engagement': ['dominickn+watch@chromium.org'],
     'site_instance': ['ajwong+watch@chromium.org',
+                      'alexmos+watch@chromium.org',
                       'creis+watch@chromium.org',
                       'nasko+codewatch@chromium.org'],
     'smb': ['cros-enterprise-lax+smbwatch@chromium.org'],