Refactor using multi-file setup

packer/ova/ubuntu-2204.json

@@ -1,13 +1,13 @@
 {
   "boot_command_prefix": "c<wait>linux /casper/vmlinuz --- autoinstall quiet<enter><wait>initrd /casper/initrd<enter><wait>boot<enter>",
   "boot_disable_ipv6": "0",
+  "boot_media_path": "/media/HTTP",
   "build_name": "ubuntu-2204",
+  "cd_file_path": "./packer/ova/linux/{{user `distro_name`}}/http/{{user `distro_version`}}",
   "distro_arch": "amd64",
   "distro_name": "ubuntu",
   "distro_version": "22.04",
   "guest_os_type": "ubuntu-64",
-  "cd_files": "./packer/ova/linux/{{user `distro_name`}}/http/{{user `distro_version`}}/*",
-  "cd_label": "cidata",
   "iso_checksum": "10f19c5b2b8d6db711582e0e27f5116296c34fe4b313ba45f9b201a5007056cb",
   "iso_checksum_type": "sha256",
   "iso_url": "https://releases.ubuntu.com/22.04/ubuntu-22.04.1-live-server-amd64.iso",