fedora-live-base,fedora-soas: livecd-iso-to-disk in .iso filesystem.
For livemedia-creator builds, inject install code into the lorax
template live/x86.tmpl that copies the script livecd-iso-to-disk
into the .iso filesystem at /LiveOS when livecd-tools is present in
the install image. This fixes commit 18d30b3, which failed in this.