Fix capwap protocol and optional wireless information header.

Complete IEEE802.11 frames tunnel WTP side.
Now WTP can send data packets to the AC.

conf/wtp.conf

@@ -12,6 +12,7 @@ application: {
 	binding = "802.11";
 
 	tunnelmode: {
+		dataframe = "usermode";
 		nativeframe = false;
 		ethframe = false;
 		localbridging = true;