Remove GRUB_SETUP and just assume you only need this for tarball image types
Make sure we source common.sh
New script to remove all ssh host keys
ensure that net.eth0 is enabled on gentoo
Add support for setting up networking on Gentoo, Redhat, Debian, and Suse based systems
For now it only supports DHCP
rename to correct name
Refactor grub install into a custom script
We only need to use grub for tarball based installs since images should includea disk with grub already installed.
Import from instance-debootstrap 17b5b2da0