A few fixes for 15.4
    
    - Fix handling of ignore_db and user_insecure_mode (pjones)
    - Fix booting on pre-UEFI Macs (pjones)
    - Fix mok variable storage allocation region (glin)
      Resolves: rhbz#1948432
    - Fix the package version in the .sbat data (pjones)
    
    Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>