[LAVA] Query devices before polling

[chaws]

query devices before poll the jobs, devices that are offline put them at the end for jobs to be checked if finished.

ci: models: avoid polling jobs waiting more than a week on the backend by chaws · Pull Request #1012 · Linaro/squad

Suggested by @roxell

[mwasilew]

I don't think this is a good idea or even feasible. There can be multiple devices of the same type. Do you query one or all of them? It might end up causing more traffic than just checking jobs status.