add fix for vxlan multicluster of not zstack host handling
add fix for vxlan multicluster of not zstack host handling

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