[BugFix: MINI-2694]
[BugFix: MINI-2694]

Stop management node when detect network down

Only network connection not available and network cable is removed

Signed-off-by: AlanJager <7ba0221af525cfcc7adbf94f7fc6b46fa1dcb7c9@outlook.com>

zstackio/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility