Add handle 10: to netem for hifi compat, reconfiguration.

mininet/link.py

@@ -245,7 +245,8 @@ def delayCmds( parent, delay=None, loss=None,
                 'limit %d' % max_queue_size if max_queue_size is not None
                  else '' )
             if netemargs:
-                cmds = [ '%s qdisc add dev %s ' + parent + ' netem ' +
+                cmds = [ '%s qdisc add dev %s ' + parent +
+                         ' handle 10: netem ' +
                           netemargs ]
         return cmds