---
fixes:
  - |
    Fixes the problem about grub2 config file. Some higher versions of
    grub2 (e.g. 2.05 or 2.06-rc1) use grub.cfg-01-MAC, while another
    lower versions of grub2 (e.g. 2.04) use MAC.conf, so we generate
    both paths in order to be compatible with both.