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
Qemu-nbd does not perform well with older versions of qemu due to
the lack of writeback caching mode. It also only builds qcow2 images
and there is a desire for raw image support. Finally, qemu-nbd makes
it very difficult to build images concurrently due to the somewhat
opaque nature of how it selects a /dev/nbd# device. losetup, on
the other hand, makes this process very straight forward.
Change-Id: I309fad8af4fd1e8d1720c17b65e1897a76d5e897
Co-Author: Clint Byrum <clint@fewbar.com>
