The license JSON file did only include the package names but not
any other metadata. Also since the file was not on the image itself,
it had to be downloaded.
Add more metadata to the license JSON and store it on the image.
The BINHOST was still configured to be the CoreOS CL upstream location
which does not work for independent Flatcar CL releases. This broke
binary package installation in the development container.
Use the correct BINHOST to fix installation of binary packages in the
development container.
