
The images produced by the diskimage-builder have their filesystem with a label of "cloudimg-rootfs", so we need to change the default /etc/fstab on fedora to reflect that. Change-Id: Id1bb00cb81cb200a114f500e26272624be577da0
Sets up a partitioned disk (rather than building just one filesystem with no partition table).
The disk will have grub[2]-install run on it, and that assumes a functional grub[2] setup.