stack/erp5: use timerserver bundled in Products.TimerService.timerserver

Since ERP5 commit 8f3b77517e (Force use of the new TimerServer, 2019-09-13)
the timerserver egg is not longer used, so it's not needed to install
and configure it.

stack/erp5/buildout.cfg

@@ -476,7 +476,6 @@ eggs = ${neoppod:eggs}
   requests
   responses
   threadframe
-  timerserver
   urlnorm
   uuid
   xml_marshaller
@@ -731,7 +730,6 @@ spyne = 2.12.14
 suds = 0.4
 facebook-sdk = 2.0.0
 threadframe = 0.2
-timerserver = 2.0.4
 urlnorm = 1.1.4
 uuid = 1.30
 validictory = 1.1.0

stack/erp5/buildout.hash.cfg

@@ -34,7 +34,7 @@ md5sum = cfe4696a67bf4886a5d8252a5274a941
 
 [template-zope-conf]
 filename = zope.conf.in
-md5sum = a833cfe556c9cbf68ac3ab0af7b95397
+md5sum = 55ef458b03c8fff3792f28fcca46d7f9
 
 [site-zcml]
 filename = site.zcml

stack/erp5/zope.conf.in

@@ -71,6 +71,15 @@ trusted-proxy 0.0.0.0
   node-id {{ node_id }}
 </product-config>
 
+
+{% set timerserver_interval = parameter_dict['timerserver-interval'] -%}
+{% if timerserver_interval -%}
+%import Products.TimerService.timerserver
+<timer-server>
+  interval {{ timerserver_interval }}
+</timer-server>
+
+{% endif -%}
 {% set sql_connection_string = parameter_dict.get('sql-connection-string') -%}
 {% if sql_connection_string -%}
 {%   set bt5_repository_url = [] -%}