* [warm reboot] save configuration after warm reboot
After warm reboot, save a copy of in memory database to config_db.json,
upgrade procedure might have removed config_db.json to force new image
to reload minigraph. However, reload minigraph is skipped during warm
reboot. Missing config_db.json would cause device to fault in next
non-upgrading cold/fast reboot.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* Update finalize-warmboot.sh
After warm reboot is done, we need to disable warm reboot flag and
tear down anything setup for warm reboot and persisted across.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
