Comment 29 for bug 1290486

I believe there is a red herring in this report: It's actually the restart of ovs-vswitchd which is causing the loss of all flows, not ovsdb-server. In my own testing, restarting ovsdb does not trigger the loss of flows. Restarting ovs-vswitchd does. I'm going to modify my patch to take that into account and resubmit.