Minor fixes; check to see if the vnode has a jailip. If not, then do
what we normally do in the main map (generate a name for the node and a CNAME for the virt name. Skip if there is a jailip, since that is going to be handled in the private vnodes map. This means that widearea vnodes without their own IPs will continue to get map entries as before, but local vnodes with their own IPs will get the special treatment and no dup entries!