fix ensure_hosts_connected in test_stub in mn_ha
fix ensure_hosts_connected in test_stub in mn_ha

zstackio/zstack-woodpecker,zstackio/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackio/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackorg/zstack-woodpecker