Code review comment for lp://qastaging/~justin-fathomdb/nova/justinsb-api-fix-imageid

> We are forcing integer identifiers now?
> -jay

I wouldn't use the word 'force'. The idea is that the image services are standardized. Given that some API's (aka the openstack API) require an actual ID parameter I think this makes sense.

The branch I'm proposing actually removes quite a bit of the translation code up in the images API layers just by standardizing the interfaces.