[FEATURE] Create an alert for tsars when the datatrail (registration?) service goes down at any of the sites

[kaitshin]

Is your feature request related to a problem? Please describe.
A few days ago, events that should have been registered were not being found with datatrail (slack thread). It seemed that something happened to the registration service and needed to be restarted, but nobody was aware/alerted until this issue was noticed/brought up manually.

Describe the solution you'd like
A slack alert, or a grafana panel, that shows when the datatrail registration service is down and needs to be restarted. Bonus points if it's something that a frb/outrigger tsar can fix themselves, or alert frbadmin who could fix it (so as to not have the burden be solely on Tarik).

Describe alternatives you've considered
N/A

Additional context
N/A