Send a manifest if verification or download failed.
Send a manifest if verification or download failed.

This way we can report the update failure immediately to the backend.
Note this only applies to UptaneCycle(); API users can still control
when manifests are sent in this case.

Signed-off-by: Patrick Vacek <a38520cbbe2e974bc8b7ea86877dd3c7115ca2d7@gmail.com>

advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr,advancedtelematic/aktualizr