Put Arne's EFI packages back

Put efi packages back, as they were removed because there was no reference about why they were added

I just realised that I removed them as there was no reference about why they were added. Apparently this was requested by Arne but no trace about it was left behind, so in a previous improvements MR I removed them :)

c8-cloud.ks

@@ -85,9 +85,11 @@ epel-release
 krb5-workstation
 nfs-utils
 grub2
+# For cases where the bootloader needs to be relocated, like Software RAID setups, we need grub2-efi-x64-modules and efibootmgr
 grub2-efi-x64-modules
 efibootmgr
 parted
+# Needed for manual partitioning for dual booting
 gdisk
 redhat-lsb-core
 rsync