take another shot at the azure image upload
first, revert previous change as Azure is calculating in GiB, thus
the previous size param resulted in exactly the right size as per local
testing.
Second, use the force_size option as suggested by the Azure documentation
For more information, see
set -x
-makef.sh --read-only-usr --image-size 4GB --grub-target bios --force $2 $2.tar.xz
-make-vhd -o subformat=fixed $2.raw $2.vhd
+makef.sh --read-only-usr --image-size 4G --grub-target bios --force $2 $2.tar.xz
+make-vhd -o subformat=fixed,force_size $2.raw $2.vhd
