Patch bootctl to not override shim by default.#247
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Backup the original shim binary before it gets overwritten by bootctl. This ensures that the Secure Boot chain is preserved. The reason we do not disassemble the bootctl and do the clis manually is that the bootctl is not only doing the folder creation or files copy, but it also configures the
/boot/efi/loader, there are some setups under it, for example:Checklist
Test pipeline run: https://dev.azure.com/mariner-org/mariner/_build/results?buildId=819585&view=results