This PR implements the combined image callbacks for rootfs rollback and finalize.
In addition, it fixes the verify callback (to use ostree admin status instead).
This should complete the implementation of rootfs combined image support (bootloader is yet to come).
This PR implements the combined image callbacks for rootfs rollback and finalize. In addition, it fixes the verify callback (to use
ostree admin status
instead). This should complete the implementation of rootfs combined image support (bootloader is yet to come).