Fix networking graph. Azure cannot give network metrics per

interface, only summarized.

circle/dashboard/views/graph.py

@@ -225,7 +225,7 @@ class VmNetwork(object):
     def get_target(self):
         metrics = []
         for n in self.obj.interface_set.all():
-            params = (self.obj.metric_prefix, n.vlan.vid, n.vlan.name)
+            params = (self.obj.metric_prefix, "eth0", n.vlan.name)
             metrics.append(
                 'alias(scaleToSeconds(nonNegativeDerivative('
                 '%s.network.bytes_recv-%s), 10), "out - %s (bits/s)")' % (