Comment 3 for bug 1605301

Not to my knowledge, min_part_hours affect nothing except for rebalance.
My scenario is that:
1. People can create a ring with bogus min_part_hours, this will not affect anything.
   But they can't rebalance with this bogus min_part_hours.
   If they do, we give them a msg for setting a sane value.

2. People can set min_part_hours a bogus value to prevent future rebalance.