Set Let's Encrypt renewal as cron jobs

[Tjzabel]

We currently have several servers that make use of Let's Encrypt. The renewal process is currently 100% manual, and should be transferred to an automated process.

[nlMeminger]

I’m all for automating this, but we should have a place where we can be alerted if anything similar to this were to fail. Maybe a new slack channel with a webhook?

…

On Wed, Oct 30, 2019 at 19:54 Tim Zabel ***@***.***> wrote: We currently have several servers that make use of Let's Encrypt. The renewal process is currently 100% manual, and should be transferred to an automated process. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#19?email_source=notifications&email_token=AELFBEPBTVCLGVQETARMKIDQRINCXA5CNFSM4JHB5EP2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HVTD2FA>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AELFBEKORLUWIWMO6KY2XELQRINCXANCNFSM4JHB5EPQ> .

[Tjzabel]

@nlMeminger RITlug eboard gets email notifications when Let's Encrypt needs to be renewed.

[Tjzabel]

PR #23 starts the process of automating this certificate renewal process. This issue will only be marked as closed once all services that require LE certs have automated renewals.