change preseed for arm64 to create EFI partition

Author: StepBee

tools/appliance/systemvmtemplate/http/preseed_aarch64.cfg

@@ -60,6 +60,12 @@ d-i partman-auto/disk string /dev/vda
 d-i partman-auto/method string regular
 d-i partman-auto/expert_recipe string                         \
       boot-root ::                                            \
+              538 538 1075 free                               \
+                      $iflabel{ gpt }                         \
+                      $reusemethod{ }                         \
+                      method{ efi }                           \
+                      format{ }                               \
+              .                                               \
               400 60 400 ext2                                 \
                       $primary{ } $bootable{ }                \
                       method{ format } format{ }              \
@@ -80,6 +86,9 @@ d-i partman-partitioning/confirm_write_new_label boolean true
 d-i partman/choose_partition select finish
 d-i partman/confirm boolean true
 d-i partman/confirm_nooverwrite boolean true
+grub-efi-arm64  grub2/force_efi_extra_removable boolean true
+d-i partman-partitioning/choose_label select gpt
+d-i partman-partitioning/default_label string gpt
 
 ### Base system installation
 # ...