Code review comment for ~philroche/maas-images:feature/esm-image-sync-support

@andreserl The issue is that no further Trusty images would be added to streams or synced to http://images.maas.io/ephemeral-v3/daily/trusty/

See

https://cloud-images-jenkins.canonical.com/job/MAAS_v3_MasterBuilder/ARCH_TYPE=amd64/258/console

"ignoring unsupported release: trusty",

I have not filed a bug report. I work on the Canonical CPC team so I'm not a consumer of these images. I help in producing them.