Production builds in Fedora have a couple extra features:
* ISOs have custom overrides to set the correct volume/app IDs
* Image filenames are structured to follow roughly NVRA format
Now we support these features with extra helper scripts. If a
"image release" value is passed in, then we fully mimic the
production image build process.
This will be particularly useful for making respins of Fedora images
with updates applied.
(cherry picked from commit 2c5cf67014f3c755c2f1b42794f804388a64e35c)
