Bug when Folio deletion command times out

[mhucka]

When Foliage issues a Folio command to delete a record, and the response times out, Folio may have completed the action, but Foliage thinks it failed (because of the timeout), so it retries it after a delay. Then, when Foliage retries the deletion command, it gets a 404 from Folio (because the record no longer exists) and thinks that that is a problem.

What Foliage should do instead is to take note of the fact that it is retrying a command due to a timeout, and if it gets a 404 in the retry, assume that the 404 means the first command actually went through instead of having failed.

This will require changes to delete_tab.py.