Add support for certbot hooks

[bakerkj]

--pre-hook PRE_HOOK Command to be run in a shell before obtaining any
certificates. Intended primarily for renewal, where it
can be used to temporarily shut down a webserver that
might conflict with the standalone plugin. This will
only be called if a certificate is actually to be
obtained/renewed. (default: None)

--post-hook POST_HOOK
Command to be run in a shell after attempting to
obtain/renew certificates. Can be used to deploy
renewed certificates, or to restart any servers that
were stopped by --pre-hook. This is only run if an
attempt was made to obtain/renew a certificate.
(default: None)

--renew-hook RENEW_HOOK
Command to be run in a shell once for each
successfully renewed certificate.For this command, the
shell variable $RENEWED_LINEAGE will point to
theconfig live subdirectory containing the new certs
and keys; the shell variable $RENEWED_DOMAINS will
contain a space-delimited list of renewed cert domains
(default: None)

[vide]

In particular --renew-hook would be a far better implementation for what cron_success_command is trying to achieve, because the cron is basically always returning true at every execution and it's completely useless.

[caiohasouza]

+1

[TNAJanssen]

--renew-hook is already gone and replaced by --deploy-hook

https://blog.wizardsoftheweb.pro/certbot-hook-api/

[Rathios]

I'm interested in working on this as I'd rather use certbot renew w/ hooks than the current solution. I'll see what I can come up with ...

[bastelfreak]

Hey @Rathios, feel free to provide a PR with anything you can come up with. We're happy to assist you. Let us know if you need any help.