This patch allows setting the root mount as RW indicated by setting
rd.cos.debugrw in the cmdline
Signed-off-by: Itxaka <itxaka.garcia@spectrocloud.com>
Original cos-immutable-rootfs sets the sentinel to livecd if it finds
the rd.cos.disable in the cmdline.
We should do the same. Unfortunately the state sdk doesnt support that
yet so we have to do it on our side until its supported
Signed-off-by: Itxaka <itxaka.garcia@spectrocloud.com>