Comment 24 for bug 1305839

For context, here's the branch I'm working on. It handles the insecure key retrieval problem. I plan on handling the udeb problem by inserting the keyring into the preseed, retrieving Release/Release.gpg for the repo, using the keyring to verify the Release file, then using the sha sums to verify the Packages and udeb files.

https://code.launchpad.net/~jason-hobbs/maas/use-key-text/+merge/215517