Restricted Queues

[val500]

Description

This PR adds restricted queue functionality to Testflinger. Restricted Queues are special queues that require authentication/authorization for job submission. A list of these queues are stored in a collection called restricted_queues. For every job submitted, the requested queue is checked to make sure it is not in the restricted queue collection. If it is, a JWT token must be submitted with the job with adequate permission to push to that restricted queue.

Resolved issues

Resolves https://warthogs.atlassian.net/browse/CERTTF-419

Documentation

Documentation was added to the public documentation in docs/

Web service API changes

N/A

Tests

Unit tests were added - these tests as well as previous job_priority/authentication tests were moved to test_v1_authorization.py.

[plars]

One very minor question, but I think once that's sorted then we can land this - then do some further testing in staging before deployment to production. There's some policy documentation that needs to be written, but I think that's more specific to our own policies of how we use it, so we'll need to sort out where that should go.

[plars]

Looks good now, let's land and do some further testing in staging.