
Currently we're building a VFAT image with the network data just to unpack it back on the next step. Just pass the file directly. This fixes a permission denied problem on Bifrost on Fedora (at least). As a nice side effect, the change reduces the amount of IO done for virtual media quite substantially. Change-Id: I5499fa42c1d82a1a29099fbbba6f45d440448b72