Arvados

As a technical user of Arvados using the Python SDK or the `arv` CLI utility, I would like an easy way to find jobs which have succeeded, failed, or are still running.

Currently this involves first filtering the container_requests by and then fetching the containers for those container_requests which pass the initial filter to get additional fields which can be further checked. I would like to be able to do this in a single operation which is efficient both from a lines of code and a number of API calls point of view.

From a user point of view, the jobs/steps are either queued, running, completed successfully, failed, or canceled. I would like a simple way to filter on these states.