Add check if node is still unavailable.
Sometimes on GCE the fence pod ends with error, but node is restarted and controller doesn't register it. This check allows controller to check if node is running, so controller doesn't have to restart node again.
Add check if node is still unavailable. Sometimes on GCE the fence pod ends with error, but node is restarted and controller doesn't register it. This check allows controller to check if node is running, so controller doesn't have to restart node again.