In preparation to build ISO's with mock or parallel podman containers,
treeinfo support was fully added as well as the addition of xorrisofs to
prepare for the future. xorrisofs should also work for both current and
previous releases.
We have also add a currently-pending RLN experiment.
* Actually use release version input to run build-iso command
* Buildstamp should be an epoch
* template out the job/pod names instead of doing them in the rendering
* label pods with toleration