The intention is that the compose struct fully specifies the test
case, and pipeline and image-info specifies the expected outputs.
Lastly, the boot struct specifies how to boot-test the image.
The checksum does not fit into this scheme, as it is computed from
the compose by querying rpmmd, and it is then passed as an input to
distro.Pipeline in order to compute the pipeline.
Introduce a new struct, rpmmd, which will eventually contain all
the data returned from rpmmd.Depsolve and later passed to
distro.Pipeline. For now it only contains the checksum.
This is not a functional change.
Signed-off-by: Tom Gundersen <teg@jklm.no>
fbf137a1b7