[Letsencrypt-devel] Bug#843561: certbot: Skip use perl in cron-script, just use shell

[debbug at think-future.com]

Second that using 

-0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && 
perl -e 'sleep int(rand(3600))' && certbot -q renew
+0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && /
bin/sh -c "/bin/sleep $((RANDOM%3600))" && certbot -q renew

Corb