SHA256(ubuntu-ova.ovf)= 677115e6fc0b462c3bf08f77d97593945ff742106d582176957e0f44e70e318b
SHA256(ubuntu-ova-disk1.vmdk)= 179f19cf83643b7f09cf5b04bfb37e69ffc335ffcfc7dcc499c3796e04602843