Prevent maas from changing kernel in the user supplied image

@dandruczyk, i don’t have all your answers, but i wouldn’t mind hearing (and understanding) all your issues and questions at once, in the context of what you’re doing.

by way of reference, see this post. if you want, you can sign up there for a Thursday slot, so i can understand what you’re doing and what your needs are for MAAS. no promises, as i’m only one of the roadmap influencers, but at least i’m asking.