try to fix apt-get install failure for ubuntu16.04 about Hash Sum mismatch
try to fix apt-get install failure for ubuntu16.04 about Hash Sum mismatch

live4thee/zstack-utility,zstackio/zstack-utility,mingjian2049/zstack-utility,mrwangxc/zstack-utility,mrwangxc/zstack-utility,zstackio/zstack-utility,zstackorg/zstack-utility,mingjian2049/zstack-utility,live4thee/zstack-utility,live4thee/zstack-utility,zstackio/zstack-utility,zstackorg/zstack-utility,mingjian2049/zstack-utility,mrwangxc/zstack-utility,zstackorg/zstack-utility