This reverts commit 2b5b800d4f. These new
images cannot be reliably uploaded to rackspace which makes iterating on
image updates/fixes very difficult. Switch back to the old image (using
new shorter hostnames) to get multinode working again. We can switch
back when we have uploads sorted out.
Change-Id: I46e051a4a566ae400c2fc153ad72596c853af32c
219db9c669