Packet-in channel plumbed thru whole stack

Change-Id: I1df0265139259cc1757f29af19132c5384943c15
diff --git a/ofagent/of_protocol_handler.py b/ofagent/of_protocol_handler.py
index 5ac8712..86f8cb2 100644
--- a/ofagent/of_protocol_handler.py
+++ b/ofagent/of_protocol_handler.py
@@ -257,6 +257,7 @@
     }
 
     def forward_packet_in(self, ofp_packet_in):
+        log.info('sending-packet-in', ofp_packet_in=ofp_packet_in)
         self.cxn.send(to_loxi(ofp_packet_in))
 
     def forward_port_status(self, ofp_port_status):