2.3.1 版本编译的时候报错 #369

$ ant -Dzstack_build_root=PATH/TO/zstackio build-zstack-network
Buildfile: PATH/TO/zstackio/zstack-utility/zstackbuild/build.xml

build-zstack-network:
     [echo] rm -rf PATH/TO/zstackio/zstack-utility/zstackbuild/target/zsn-agent
    [mkdir] Created dir: PATH/TO/zstackio/zstack-utility/zstackbuild/target/zsn-agent
     [echo] checking if file[PATH/TO/zstackio/zstack-network] exists ...
     [exec] ls: PATH/TO/zstackio/zstack-network: No such file or directory

BUILD FAILED
PATH/TO/zstackio/zstack-utility/zstackbuild/projects/zstack-network.xml:11: The following error occurred while executing this line:
PATH/TO/zstackio/zstack-utility/zstackbuild/utils.xml:8: exec returned: 1