Comment 4 for bug 1174778

default-image-id is no longer supported.
Using simplestreams metadata is the new supported way to get the correct image id to run. There's some initial simplestreams metadata in the HP Cloud public bucket which provides an image id for precise/amd64 on region az-1.region-a.geo-1. These files need to be updated to add the image ids for the other regions. I'll talk to someone to get the metadata updated.