Avoid egress processing for controller packet-in/out in fabric.p4

Change-Id: If8ac129efd11a437054ed6b7178e167eff9c6e74
diff --git a/pipelines/fabric/src/main/resources/include/header.p4 b/pipelines/fabric/src/main/resources/include/header.p4
index 25ac400..5591c11 100644
--- a/pipelines/fabric/src/main/resources/include/header.p4
+++ b/pipelines/fabric/src/main/resources/include/header.p4
@@ -269,6 +269,7 @@
     next_id_t next_id;
     _BOOL pop_vlan_when_packet_in;
     _BOOL is_multicast;
+    _BOOL is_controller_packet_out;
     _BOOL clone_to_cpu;
     bit<8> ip_proto;
     bit<16> l4_src_port;