[RFE] Redefining general timeouts without overriding general HAPROXY_HEAD template

[mimmus]

Being forced to override global HAPROXY_HEAD template only to redefine some general timeouts (i.e. timeout client, timeout server) is an overkill.

For other "options", there is a shortcut:
https://github.com/mesosphere/marathon-lb#haproxy-global-default-options
but it is not valid for "timeouts".

Any help?