
Upgrade xen tool to install Ubuntu Xenial; change the upstart task to systemd task to finish the OpenStack installation by using devstack. Change-Id: I8129923be3c41e7f60e9d32348a5ea8e07d4845b
Upgrade xen tool to install Ubuntu Xenial; change the upstart task to systemd task to finish the OpenStack installation by using devstack. Change-Id: I8129923be3c41e7f60e9d32348a5ea8e07d4845b