haproxy: Move let's encrypt cron job to weekly

images/haproxy/startup.sh

@@ -52,7 +52,7 @@ kill -SIGTERM `cat /tmp/haproxy.pid`
 rm /tmp/haproxy.pid
 
 # Create renew cron job
-mv /usr/local/bin/letsencrypt.cron /etc/cron.monthly/letsencrypt
+mv /usr/local/bin/letsencrypt.cron /etc/cron.weekly/letsencrypt
 # remove default cron job
 mv /etc/cron.d/certbot /tmp