The edge installer and edge simplified installer build roots have
diverged, i.e. the latter need clevis/luks, so define a new pkg
set for the simplified installer extending the edge installer one.
Co-Authored-By: Christian Kellner <christian@kellner.me>
We want to support LVM on all image types (optionally) so let's make
lvm2 available in all build roots.
Manifests and image info updated for RHEL 8.6 and CentOS Stream 8.
Signed-off-by: Achilleas Koutsou <achilleas@koutsou.net>