redhat/dracut-virt.conf: add systemd-veritysetup module
JIRA: https://issues.redhat.com/browse/RHEL-45168
Upstream Status: RHEL-Only
This module, together with a specific kernel cmdline and separate partition
containing the verification hash produced by veritysetup, enables
root disk integrity protection for UKIs.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>