When priviledge mode is set, don't add any capabilities as they
are included.
Use 1.6.4 podman because 2.0.5 rootless doesn't work with
systemd [1]
Disable Selinux on host.
[1] https://github.com/containers/podman/issues/8965
Closes-Bug: #1910970
Change-Id: I73ac1c405e8a3539937a5578bb003cba0b935d94