Grub.cfg to load ikgt module in grub.

grub.cfg

# CoreOS grub oem config to add coreos-ikgt support to the grub config of the OS.
# The ikgt_pkg.bin shoudl already be inside /boot/coreos and this file should be
# placed inside /dev/sda6 which is by default mounted at /usr/share/oem/ in coreos
# production build.
#
# **Note**: 
# Please read the comments in the file below before using the configuration. It might
# cause temporarily to wreck your system otherwise.

set default='coreos-ikgt'

menuentry "CoreOS with ikgt" --id=coreos-ikgt {
   	echo 'Loading iKGT  ...'
	  multiboot /coreos/ikgt_pkg.bin /coreos/ikgt_pkg.bin
	  gptprio.next -d usr -u usr_uuid
	  
    # The value of the constant below might vary in every case. I copied this portion of the code from
    # /boot/coreos/grub/grub.cfg.tar of coreos-production release. Please do the same or you might render
    # your instance unbootable.
    if [ "$usr_uuid" = "7130c94a-213a-4e5a-8e26-6cce9662f132" ]; then
       		linux$suf /coreos/vmlinuz-a mount.usr=PARTUUID=$usr_uuid $linux_cmdline
    else
       		linux$suf /coreos/vmlinuz-b mount.usr=PARTUUID=$usr_uuid $linux_cmdline
    fi
}