[BugFix: ZSTACK-29401]
[BugFix: ZSTACK-29401]

create symlink GuestTools.iso to GuestTools-x.y.z.iso then copy to
host

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