Rely on add_argument in ElementsWorker.configure

We should override add_arguments in both ElementsWorker.configure and DatasetWorker.configure.

Refs https://redmine.teklia.com/issues/7750

changed milestone to %0.4.0

added P3 Quick Win labels

assigned to @ebardou

mentioned in merge request !569 (merged)

closed with merge request !569 (merged)