Add Flower to track a state of celery tasks and terminate tasks to.

Updated celery to 5.3.6 version
Enable an autoscaling feature for celery workers (from 4 to 12) in dependency of requested tasks to be done

PRODX-37490

Change-Id: I9d410de5fadd2fe254ee2a18a67f56f5a28305a2
4 files changed