Images changes ahead

[Michael Vogt]

Hi,

just a quick heads-up about the 16.04 rolling image. We plan to move
exclusively to the all-snaps images soon. This means that the existing
installed 16.04 system-image based installs will soon stop
updating. There is currently no transition so you will have to reflash.

As part of this change we will also rename some directories. It will
be /snaps, /var/lib/snaps and /home/*/snaps in the new images. Plus
the environment variables will be cleaned up, the details for the new
names will follow once that change has landed.

Sorry for the inconvenience. It is a really important step for snappy
and our goal is that this is the only image change that requires a
reflash.

Cheers,
 Michael