Test_sweep01 is currently disabled for tiered storage as it fails with the tiered hook on.  The test is confused about how the fact that open files aren't going down as the test loops.  However, we do checkpoints in the loop and the tiered hook maps simple checkpoints to checkpoints with flush_tier on.  So we do have more files involved and potentially we have local versions of these files.  However, forcibly setting local_retention=0 in the tiered_storage configuration doesn't seem to help.

Note that there is a ticket WT-11354 that indicates there might be a file descriptor leak for flush_tier - that may have some bearing on this ticket.