[AETHER-1032] Backport AETHER-538 to fabric.p4

AETHER-538 introduces a new design for the egress pipeline
where the tagged ports are explicitily matched in the
egress_vlan table. Moreover, no match means dropped with
this new design.

Change-Id: If6f8c73aad0effd01f18c87c147535378e8db84c
diff --git a/pipelines/fabric/api/src/main/java/org/onosproject/pipelines/fabric/FabricConstants.java b/pipelines/fabric/api/src/main/java/org/onosproject/pipelines/fabric/FabricConstants.java
index 05bf7cf..05e738f 100644
--- a/pipelines/fabric/api/src/main/java/org/onosproject/pipelines/fabric/FabricConstants.java
+++ b/pipelines/fabric/api/src/main/java/org/onosproject/pipelines/fabric/FabricConstants.java
@@ -266,6 +266,8 @@
             PiActionId.of("FabricIngress.forwarding.set_next_id_routing_v6");
     public static final PiActionId FABRIC_INGRESS_NEXT_ROUTING_SIMPLE =
             PiActionId.of("FabricIngress.next.routing_simple");
+    public static final PiActionId FABRIC_EGRESS_EGRESS_NEXT_PUSH_VLAN =
+            PiActionId.of("FabricEgress.egress_next.push_vlan");
     public static final PiActionId FABRIC_EGRESS_BNG_EGRESS_DOWNSTREAM_ENCAP_V4 =
             PiActionId.of("FabricEgress.bng_egress.downstream.encap_v4");
     public static final PiActionId FABRIC_INGRESS_NEXT_OUTPUT_HASHED =
@@ -282,6 +284,8 @@
             PiActionId.of("FabricIngress.acl.punt_to_cpu");
     public static final PiActionId FABRIC_INGRESS_BNG_INGRESS_DOWNSTREAM_QOS_PRIO =
             PiActionId.of("FabricIngress.bng_ingress.downstream.qos_prio");
+    public static final PiActionId FABRIC_EGRESS_EGRESS_NEXT_DROP =
+            PiActionId.of("FabricEgress.egress_next.drop");
     public static final PiActionId FABRIC_INGRESS_SPGW_LOAD_PDR =
             PiActionId.of("FabricIngress.spgw.load_pdr");
     public static final PiActionId FABRIC_EGRESS_EGRESS_NEXT_POP_VLAN =