* ARM64 images fail to boot when secureboot is enabled, this is due to Focal and Bionic
images having unsigned `shim` and `grub-efi-arm64`
[Test Plan]
* Build an ARM64 image and create and ensure that it boots when secureboot is enabled
[Where problems could occur]
* A lot of different derivative images inherit from `disk-image-uefi.binary`, this change
has the potential to tamper with the arcane matters related to boot
[Other Info]
* This is a backport, images of Jammy and newer have had those changes since release
[Impact]
* ARM64 images fail to boot when secureboot is enabled, this is due to Focal and Bionic
images having unsigned `shim` and `grub-efi-arm64`
[Test Plan]
* Build an ARM64 image and create and ensure that it boots when secureboot is enabled
[Where problems could occur]
* A lot of different derivative images inherit from `disk-image- uefi.binary` , this change
has the potential to tamper with the arcane matters related to boot
[Other Info]
* This is a backport, images of Jammy and newer have had those changes since release