> On what cloud or virtualization platform are you running those images?
Straight libvirt/kvm (hence my push for the NoCloud datasource!)
Right, so we can see why there is a mismatch.
I'll leave it the right peeps on this list to comment, however I think what we ideally want to provide is a generic kvm image (in fact not necessarily specific to kvm; just call it a generic image) that only has NoCloud enabled. I think there is room to add in extra datasources (http://cloudinit.readthedocs.org/en/latest/topics/datasources.html) as long as they don't inhibit the boot process and gracefully degrade without delay.
Its hard to cater for everything no matter how many different types of images you provide, however I'd just like to flag that Ubuntu do this pretty well.