Update haless-03 configuration for new storage device name

configuration/hardware-configurations/machine-haless-03.nix

@@ -11,6 +11,7 @@
   boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "sd_mod" "sr_mod" ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
+  boot.loader.grub.device = lib.mkForce "/dev/vda";
 
   fileSystems."/" =
     { device = "/dev/disk/by-uuid/fae209f9-45d5-457a-bccf-c38e7e41c5b9";