GRUB configuration changes aren't packaged

[Evan Broder]

We have 3 changes we make to the GRUB menu.lst to make our servers totally manageable over IPMI. These changes should be packaged.

Here is the description of the necessary changes from the notes file in invirt-host-master:

# In /boot/grub/menu.lst:
# - Configure remote management for GRUB:
# serial --unit=1 --speed=57600 --word=8 --parity=no --stop=1
# terminal --timeout=5 serial console
# - Configure remote management for Xen:
# # xenhopt=console=com2L,vga
# - Configure remote management for Linux:
# # xenkopt=console=tty0 console=ttyS1,57600n8
# - Run update-grub