Comment 5 for bug 1821045

I agree with #2. Regular proxy settings should also be configured via cloudinit-userdata for the core snap the same way apt proxy setting are set. Otherwise they will be set only when proxyupdater runs which may be too late.

I would also consider adding an option to set SNAPPY_STORE_NO_CDN environment variable for snapd (to support environments that do not yet have enterprise proxy).