To use this hook, use following annotations:
annotations:
# Request the hook sidecar
hooks.kubevirt.io/hookSidecars: '[{"image": "registry:5000/kubevirt/example-disk-mutation-hook-sidecar:devel"}]'
# Overwrite the disk image name
diskimage.vm.kubevirt.io/bootImageName: "virt-disk.img"