Fix composefs and kdump interaction
As part of https://github.com/coreos/fedora-coreos-tracker/issues/1718 and https://gitlab.com/fedora/bootc/tracker/-/issues/11#note_1929130136, we are looking at unify on composefs.
We are having a weird issue with kdump when composefs is enabled:
- https://bugzilla.redhat.com/show_bug.cgi?id=2284097
- https://issues.redhat.com/browse/RHEL-35885
Is this tested with the bootc images?
issue