* Add checks for other error types within the PKI plugin
- The PKI plugin assumes the code it is calling always returns an error
of type errutil.UserError or errutil.InternalError. While I believe
so far this is still true, it would be easy to add a code path that
just returns a generic error and we would completely ignore it.
- This was found within some managed key testing where I forgot to wrap
an error within one of the expected types
* Add changelog
