Before we couldn't be sure if we were a permanent container or not.
Now we explicitly pass this on the command line so we don't depend on the
extra logic in `lxc publish --force` for ephemeral handling.
This means we avoid restarting the container after we publish
since we tear it down right away anyhow.
Likewise, there was sometimes a race which prevented the deletion
while the container was in a boot stage.
Matthew Hooker
Chris Lundquist
Megan Marsh