Fix ftpscraper in run_update_data.sh to work with crontabber bookkeeping
Fix ftpscraper in run_update_data.sh to work with crontabber bookkeeping

ftpscraper runs once an hour, so we need to reset the crontabber bookkeeping,
otherwise running "make dockersetup" followed by "make dockerupdatedata"
will cause ftpscraper to start up, think it's run already, and halt without
doing anything.

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