Fix Fedora and TigerOS UEFI Dualboot

[axk4545]

Work with upstream Fedora and parallel project Korora to get a permanent fix for the issue with UEFI boot and the anaconda-installclass related to the location of grub boot files.

They are currently in /boot/efi/EFI/fedora and are placed there by the grub2 package from upstream Fedora. This prevents dualbooting Fedora with TigerOS as that directory is used by both OSes and installing either after the other overwrites the files in that directory.

We have temporarily accepted that dualbooting is not possible with this set up but would like to work with Korora and Fedora to make this easier to do in the future.