Runs the RHEL NFS path of the postscript against a scratch tree that
stands in for the mounted dump export. Checks that kdump.conf points at
the node's own subdirectory, that only that subdirectory is created on
the target, and that nothing lands at the export root. RHEL 7 keeps the
dracut workaround but under the node subdirectory.
Five of the eight assertions fail against the previous behavior.