Debug, update osfield to reflect current naming convention, not yet updated in compose info json

Per Juanje from ATC, there will be rework to the automotive json, subsequent data fields, and all of the automotive images currently built - at this time we can no longer rely on the compose json to provide all of the fields with the full name.

This is a temporary implementation while the long term plan is to implement the ATC function for providing the img url.

It was also advised that rework will happen for the get_compose.py atc function, and not to integrate that either.