The `start-resin-supervisor` script in newer OS version no longer uses the
SUPERVISOR_TAG environment variable setup on supervisor.conf and
update-supervisor.conf.
This change removes the need for that variable with livepush supervisor
to make it compatible with older and newer OS versions
Change-type: patch
We move the old sync.js script to tools/, and delete the now-broken
sync-debug.js.
We add a command `npm run sync`, which starts a livepush process
with the supervisor on a device.
Change-type: minor
Signed-off-by: Cameron Diver <cameron@balena.io>
