For RHEL 8.5, user and ssh key are added in blueprint.
For Fedora 33, RHEL 8.3 and 8.4, user and ssh key have to be
added in ks file due to bz#1896178.
bz#1896178 has been fixed already on RHEL 8.5 only, but still exists
on Fedora 33, RHEL 8.3 and 8.4. This update covers Fedora 33,
RHEL 8.5, RHEL 8.4 and RHEL 8.3.