On teirdown, hierloom should not delete buckets by default.

[weavenet]

Currently heirloom will delete buckets when it tears down an heirloom.

If there are any objects in the buckets, they will not be deleted.

However, if another heirloom has been created that uses those buckets, however has not uploaded any objects, this deletion can cause an inconsistency.

I'm not %100 sure, however I think the best solution is not to destroy the buckets as part of teardown (or possibly check for others in the catalog that are using those buckets).