We should to set up the ISO (may need anaconda changes) so that what's in interactive-defaults.ks takes effect for kickstart installs as well. This would avoid kickstart users having to follow any internal layout changes (such as how we're going to move the content from /run/install` in F26).

A major thing this would fix is that our cloud/vagrant image builds could stop replicating the partitioning defaults and ostreesetup. (Maybe, releng may still want to build cloud images with an old ISO but new content).