Comment 9 for bug 1642457

Proposed a revert for the above fix in https://review.openstack.org/#/c/442513/ as it does not appear to address the buggy behavior of writing empty key files.

I also don't think the impact of this should be Wishlist, as there are no new features being requested. Instead, this is an edge case with Low impact -- or Medium if the effect can cascade through multiple rotation attempts.