[monitoring] Regular run + monitoring of the system-tests

[nutrina]

User Story

As a passport developer
I want the system tests to be executed on a regular basis (once every 5 minutes)
Such that I can verify the health status of our service in a superset dashboard and in uptime robot

Acceptance Criteria

GIVEN I open the "service health" dashboard
WHEN when I go to the service health dashboard
THEN I can see the overall status of the last 100 runs of the system-test runs
AND drill down into individual tests to check for the status (or errors)

GIVEN the system tests are in place
WHEN a run of the system tests is not succesfull
THEN the on-call engineer is receiving a pagerduty notification via uptime robot

Technical details

• for uptime robot to be able to pull the status of the last system-tests run, we shall implement a public API that returns the status & timestamp of the last test run
  • we consider the system to be in an error state if:
    • the last test run failed
    • or the last test run was over 10 minutes ago (feel free to suggest another threshold)