SHA256(ubuntu-ova.ovf)= bfa722321793c51bfbd3de9c152ad8fd45bf2f4e60e416f04d5e43fcfb440c96
SHA256(ubuntu-ova-disk1.vmdk)= 4e45791dc1360a8ef8ad3a3af5a4c644a80b06fd6b2ec06f54b6f6706fb7c95a