Garbage collecting task

Garbage collecting is removing descriptors or events. Heavy requests to internal services are executed with a timeout x 100 compared to the set one.

Task allows to remove associated with events images (samples or image_origins) by setting appropriate options for task - remove_samples, remove_image_origins. In case url of the image origin points to external image task tries to remove it by performing DELETE request to the image url.

If Luna Image Store is disabled