Automatic garbage collection should use delete-old-workitems option

I was told that the automatic garbage collector does not delete workitems older than 21 days.

Usually that is done manually by invoking the GC with the "delete-old-workitems" option.

There have been many times when the disk became full with artifacts, and each time a manual intervention of GC + "delete-old-workitems" was required.

It seems strange that it is not handled by the automatic GC process, so i suggest to pass that option to the auto GC process as well.