Add vrf counter request/reply.

Add OFP_BSN_VLAN_ALL constant to request counters for all vlans.
diff --git a/openflow_input/bsn_vlan_counter b/openflow_input/bsn_vlan_counter
index 51dd356..5d90724 100644
--- a/openflow_input/bsn_vlan_counter
+++ b/openflow_input/bsn_vlan_counter
@@ -1,4 +1,4 @@
-// Copyright 2013, Big Switch Networks, Inc.
+// Copyright 2013-2014, Big Switch Networks, Inc.
 //
 // LoxiGen is licensed under the Eclipse Public License,
 // version 1.0 (EPL), with the following special exception:
@@ -30,6 +30,10 @@
 
 #version 4
 
+enum ofp_bsn_vlan_counter_constants {
+    OFP_BSN_VLAN_ALL = 0xffff,
+};
+
 enum of_bsn_vlan_counter_t(wire_type=uint8_t, complete=False) {
   OFP_BSN_VLAN_COUNTER_RX_BYTES = 0,
   OFP_BSN_VLAN_COUNTER_RX_PACKETS = 1,