do not set upgraded flag if /tmp/REPO_TAG does not exist
do not set upgraded flag if /tmp/REPO_TAG does not exist

firewalla/firewalla,MelvinTo/firewalla,MelvinTo/firewalla,MelvinTo/firewalla,MelvinTo/firewalla,firewalla/firewalla,firewalla/firewalla,MelvinTo/firewalla,firewalla/firewalla,firewalla/firewalla