Code review comment for ~d0ugal/maas-images:release-notifications

> The "1" in "com.ubuntu.maas:candidate:1:maas-notification" can be used as your
> version. Its up to you if you want a specific field.
>
> It looks like our existing mirroring tools require the file field, and it must
> be valid. If I generate a stream and try to mirror it the SimpleStreams
> mirroring tool chokes. sstream-mirror is Canonical's standard mirroring
> tool[1] which goes back at least to Precise. Unfortinetly that means this
> stream must work with the tool as is.

Hrm, interesting. I don't understand why that is the case because as far as I can tell the paths are valid and do exist.

For example:

https://people.canonical.com/~dougal/maas-stream-with-notifications/streams/v1/com.ubuntu.maas:candidate:1:maas-notification.json

path to:

https://people.canonical.com/~dougal/maas-stream-with-notifications/release-notifications/20200922.0/release-notification.yaml