httpclose was not strong enough, use forceclose instead

slapos/recipe/erp5/template/haproxy.cfg.in

@@ -22,12 +22,12 @@ defaults
   timeout connect 5s
   # As requested in haproxy doc, make this "at least equal to timeout server".
   timeout client 305s
-  # Use "option httpclose" to not preserve client & server persistent connections
+  # Use "option forceclose" to not preserve client & server persistent connections
   # while handling every incoming request individually, dispatching them one after
   # another to servers, in HTTP close mode. This is really needed when haproxy
   # is configured with maxconn to 1, without this options browser are unable
   # to render a page
-  option httpclose
+  option forceclose
 
 listen %(name)s %(ip)s:%(port)s
   cookie  SERVERID insert