Feature request: parameter to ignore and clean redis keys of incoming ids

[cfurrow]

When a script needs to be run more than once, it would be ideal to supply an option to the scripterator script to ignore the incoming IDs presence in either the 'checked' or 'failed' redis sets for this script, and additionally clear out the ID from the redis sets before running.

[cfurrow]

Maybe a RERUN=true env var.