support oh dear cronjob monitoring

Author: baszoetekouw

roles/haproxy/defaults/main.yml

@@ -48,3 +48,6 @@ haproxy_acmedns:
 
 # on which weekday (cron, 0==sunday) to run the renewal script
 haproxy_acme_cronjob_dow: 1
+
+# optional monitoring url for acme cron
+haproxy_acme_cronjob_monitor_url:

roles/haproxy/tasks/acme.yml

@@ -69,3 +69,6 @@
     content: |
       MAILTO=surfconext-beheer@surf.nl
       30 07    * *   {{ haproxy_acme_cronjob_dow }}    acme    /home/acme/.acme.sh/acme.sh --cron --home /home/acme/.acme.sh > /dev/null
+      {%- if haproxy_acme_cronjob_monitor_url|bool and haproxy_acme_cronjob_monitor_url|length > 0 -%}
+         {# #} && curl -fsS --retry 3 -o /dev/null {{ haproxy_acme_cronjob_monitor_url }}
+      {%- endif %}