feature request: `cron_after_command`

[rbos]

Bit of a feature request. I think this could be just an oversight.

Background: all our domains were configured, for whatever reason, to use certbot in standalone mode. I'll probably change this. So they stop & start httpd.

How to reproduce (e.g Puppet code you use)

Create any letsencrypt rule using cron to run certbot with before/after hooks.

What are you seeing

When certbot fails for any reason in a cron run, there's no way to run a command if it fails, only if it succeeds.

So for instance, if you do:

cron_before_command  => '/bin/systemctl stop httpd',
cron_success_command => '/bin/systemctl start httpd',

then HTTPD will be stopped, certbot fails, and httpd will not be restarted, even if the failure was transient.

I'd like, perhaps, a "cron_after_command".