Forgot to inject cookie

roles/proxy/templates/haproxy.cfg.j2

@@ -49,6 +49,7 @@ backend www-backend
 backend wrestlingdev
    redirect scheme https if !{ ssl_fc }
    balance roundrobin
+   cookie SERVERID insert indirect nocache
    {% for web_server in webservers %}
    server {{ web_server }} {{ web_server }}:443 check cookie {{ web_server }} ssl verify none
    {% endfor %}