Allow options on external servers

templates/haproxy_cfg

@@ -135,7 +135,7 @@ frontend https_in_{{ cert.ip }}
 {% for external in cert.external|default([]) %}
 
 backend backend_{{ external.key }}
-  server server_{{ external.key }} {{ external.server }} maxconn 100
+  server server_{{ external.key }} {{ external.server }} {{ external.options }}
 {% endfor %}
 {% endfor %}
 {% for host in groups['all'] %}