SHA256(ubuntu-ova.ovf)= 3f9105878a881548a9b761baf57a64aa76a5541fa020188a45b9ffbfd99b8129
SHA256(ubuntu-ova-disk1.vmdk)= 10a344f9ffa03bb5dcbb698a9df47d9a8991109a4daf66eca53463b9f3e41b3b