SHA256(ubuntu-ova.ovf)= 35564964b645a437662f19455656d78aafd6c78fa960a83338cc5a2f33ce4635
SHA256(ubuntu-ova-disk1.vmdk)= b5c93cdfb7a81f5eed3d0dc7a7eef82c75159228f885805bce2a628f60df315e