This is a first attempt at getting INGRESS packets flowing northwards in the system.
Tested with ponsim and EAPOL packets generated by the RG tester; confirmed that the
packets flowed from rg->onu->olt->adapter->rw-core->ofagent.

Change-Id: I534c2a376751de50f8e5af9676cd9d467e7b3835
diff --git a/rw_core/core/logical_device_agent.go b/rw_core/core/logical_device_agent.go
index ea94788..86b79f9 100644
--- a/rw_core/core/logical_device_agent.go
+++ b/rw_core/core/logical_device_agent.go
@@ -1015,5 +1015,6 @@
 func (agent *LogicalDeviceAgent) packetIn(port uint32, packet []byte) {
 	log.Debugw("packet-in", log.Fields{"port": port, "packet": packet})
 	packet_in := fd.MkPacketIn(port, packet)
+	agent.ldeviceMgr.grpcNbiHdlr.sendPacketIn(agent.logicalDeviceId, packet_in)
 	log.Debugw("sending-packet-in", log.Fields{"packet-in": packet_in})
 }