Comment 2 for bug 1998348

The title is a generic error, adding a link to the troubleshooting doc here as well in case it helps someone else coming across this bug in the future: https://github.com/redhat-openstack/openstack-selinux/blob/master/doc/TROUBLESHOOTING.md#how-to-resolve-selinux-boolean-os_enable_vtpm-does-not-exist