Specify our monitoring needs and build an inventory of the services that need monitoring

… with a per-{service,test} priority level.

Blueprint: https://tails.boum.org/blueprint/monitor_servers/

Parent Task: #5734 (closed)

Related issues

• Blocks #8645 (closed)
• Blocks #8646 (closed)

Original created by @intrigeri on 8649 (Redmine)