Import patches-unapplied version 2.451 to ubuntu/artful-proposed

Imported using git-ubuntu import.

Changelog parent: 8eadac557b

New changelog entries:
  * Fix a reference to an undefined variable in the ubuntu-cpc hooks,
    introduced by the previous upload.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.451) artful; urgency=medium
+
+  * Fix a reference to an undefined variable in the ubuntu-cpc hooks,
+    introduced by the previous upload.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Fri, 25 Aug 2017 14:28:43 -0700
+
 livecd-rootfs (2.450) artful; urgency=medium
 
   [ Steve Langasek ]

live-build/ubuntu-cpc/hooks/033-disk-image-uefi.binary

@@ -83,8 +83,7 @@ install_grub() {
         --target=${efi_target} \
         --removable \
         --uefi-secure-boot \
-        --no-nvram \
-        --modules="${grub_modules}"
+        --no-nvram
 
     if [ -f mountpoint/boot/efi/EFI/BOOT/grub.cfg ]; then
         sed -i "s| root| root hd0,gpt1|" mountpoint/boot/efi/EFI/BOOT/grub.cfg