Issue

• When using ReaR command rear mkbackup or rear mkrescue to create the backup or rescue image, command fails with the following error

  '/boot/efi/EFI/redhat/grubx64.efi' -> '/tmp/rear.5DkDRILzWkZLt8I/tmp/mnt/EFI/BOOT/BOOTX64.efi'
  grub2-mkimage: error: cannot open `/usr/lib/grub/x86_64-efi/moddep.lst': No such file or directory.
  2017-10-11 09:21:23 ERROR: Error occurred during grub2-mkimage of BOOTX64.efi
  ==== Stack trace ====
  Trace 0: /usr/sbin/rear:504 main
  Trace 1: /usr/share/rear/lib/mkbackup-workflow.sh:22 WORKFLOW_mkbackup
  Trace 2: /usr/share/rear/lib/framework-functions.sh:85 SourceStage
  Trace 3: /usr/share/rear/lib/framework-functions.sh:45 Source
  Trace 4: /usr/share/rear/output/ISO/Linux-i386/250_populate_efibootimg.sh:69 source
  Trace 5: /usr/share/rear/lib/uefi-functions.sh:50 build_bootx86_efi
  Trace 6: /usr/share/rear/lib/_input-output-functions.sh:132 StopIfError
  Message: Error occurred during grub2-mkimage of BOOTX64.efi
  == End stack trace ==
  2017-10-11 09:21:23 Running exit tasks.
  removed directory: '/tmp/rear.5DkDRILzWkZLt8I/outputfs'
  2017-10-11 09:21:23 Finished in 184 seconds
  2017-10-11 09:21:23 Removing build area /tmp/rear.5DkDRILzWkZLt8I
  removed directory: '/tmp/rear.5DkDRILzWkZLt8I'
  2017-10-11 09:21:23 End of program reached