Goal

• Update GRUB2 configuration on when upgrading from CentOS Stream 9 to RHEL 10

Acceptance criteria

• GRUB2 configuration is updated and GRUB2 image installed
  • This is mainly a protective measure to prevent issues in case the original distribution GRUB2 tooling generates images that expect different format of a config file. To be on the safe side we rather re-generate the GRUB2 config file and install the GRUB2 image.