config.py: increase timeout for data discovery from 5 to 10 minutes

All this does is bump up the timeout for data discovery to 10 minutes just to be sure. It looks like from the some of the recent low-latency lock loss jobs that it sometimes does have all the required data, and so the jobs run to completion. Other times, it appears to be missing up to a minute of data still, so this hopefully should make it guaranteed to grab data except in the case of extreme failures.