#3336 amf: node did not reboot in split-brain prevention

[Thang Duc Nguyen]

With split-brain prevention with arbitration enable, relaxation mode is enable.
The arbitration is down, then one SC is down. But the remain SC is still alive.
It should be rebooted in this case.

2023-04-04T07:52:12.137+02:00 SC-2.1 osafamfd[5337]: NO Node 'SC-1' is down. Start failover delay timer
...
2023-04-04T07:52:19.286+02:00 SC-2.1 osafamfd[5337]: NO Relaxed node promotion is enabled, peer SC is connected