Refactored INT service impl to support multi-instance ONOS and fabric.p4

Change-Id: Ic82a3ab72d71a774606b25997e283b93aedc6ec9
diff --git a/pipelines/fabric/src/main/resources/include/define.p4 b/pipelines/fabric/src/main/resources/include/define.p4
index 26d3167..dfde323 100644
--- a/pipelines/fabric/src/main/resources/include/define.p4
+++ b/pipelines/fabric/src/main/resources/include/define.p4
@@ -37,6 +37,14 @@
 #define _PKT_OUT_HDR_ANNOT
 #endif
 
+#ifndef _PRE_INGRESS
+#define _PRE_INGRESS
+#endif
+
+#ifndef _PRE_EGRESS
+#define _PRE_EGRESS
+#endif
+
 #ifndef IP_VER_LENGTH
 #define IP_VER_LENGTH 4
 #endif