monit: reenable admin user

templates/etc/monit/conf.d/config.erb

@@ -7,4 +7,5 @@ set alert <%= admin %> reminder 30
 <% end -%>
 set httpd port 2812 and
     allow admin:monit readonly
+    allow <%= @admin_user %>:<%= @admin_passwd %>
 set eventqueue basedir /var/monit slots 5000