chroot: make sure we dont lose /etc/resolv.conf
chroot: make sure we dont lose /etc/resolv.conf

Signed-off-by: Robert Nelson <d6c41255011d14bfa93d8562b946ca186cfa0c7b@gmail.com>

RobertCNelson/omap-image-builder,RobertCNelson/omap-image-builder,beagleboard/image-builder,beagleboard/image-builder