Setup Uptime Monitoring for https://openedx.org

[feanil]

We own https://openedx.org but we have no monitoring to tell us whether it's up or down. We should setup something so that we can find this out fairly quickly rather than be told by consumers of the website.

Per earlier discussion, this doesn't mean we need a strong SLA or a paging setup. For the initial version of this, notifying via e-mail or slack or both is probably sufficient.

AC:

• https://openedx.org is being monitored for outages.
• https://openedx.org is being monitored for valid SSL certs.
• Notifications go to e-mail(tcril-engineering@tcril.org) or Slack(#tcril-engineering) or both.

[sarina]

@feanil - do we still need to do this?

[feanil]

Yes, as far as I know we have not done this yet.