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Uprev grub and shim packages to new versions. The packages (grub in particullar) went through a major restructuring, including name change in output binary packages. This commit updates build tools and files to be aware of new names and handle the new packages Change-Id: I89636218bdb8e97d39e69e764ae376b643657f50 Depends-On: https://review.openstack.org/#/c/578440