Code review comment for lp:~psivaa/core-image-watcher/image-info-from-constants

Ooops. I missed something.

The format u-d-f uses channels changed a few weeks back. As a result, the core-image-publisher was modified to hardcode the names for the channel and release. The problem is that the u-d-f query operations still use the "ubuntu-core/15.04/edge" format, but when actually downloading an image, all three components of this have to be specified separately. For the snappy-proposed-selftest-agent, we took the approach of specifying "RELEASE" and "CHANNEL" as independent constants and then letting the code organize them into the right usage. We should do the same thing here. But again, this could be done as a follow on MP.