f941684439
Upstreaming several changes from XenServer CI: - Use tty0 as console - thus the user can see what's happening during installation over VNC console. - Set the number of VCPUs to 6 for the DomU appliance - Add prepare_node_xenserver.sh script. - Use testing xva 1.1.4 which has trusty. Change-Id: I56fc4e1af12f3f13fd1aa0b772bd8734b412d3d5