Support connecting to multiple OpenFlow controllers

Change-Id: I0989d5031fb2d4f5aa78ba0e4576e465f826a419
diff --git a/internal/pkg/openflow/meter.go b/internal/pkg/openflow/meter.go
index 61ded75..c8ee22c 100644
--- a/internal/pkg/openflow/meter.go
+++ b/internal/pkg/openflow/meter.go
@@ -23,7 +23,7 @@
 	"golang.org/x/net/context"
 )
 
-func (ofc *OFClient) handleMeterModRequest(request *ofp.MeterMod) {
+func (ofc *OFConnection) handleMeterModRequest(request *ofp.MeterMod) {
 	if logger.V(log.DebugLevel) {
 		js, _ := json.Marshal(request)
 		logger.Debugw("handleMeterModRequest called",