CORD-800 Use new interface vlan config for VLAN assignment

In addition
  - Change the name and type of INTERNAL_VLAN

Change-Id: I48bb89cc1cb1fe4155b4d889b1e7384c8bf673fa
diff --git a/src/main/java/org/onosproject/segmentrouting/IcmpHandler.java b/src/main/java/org/onosproject/segmentrouting/IcmpHandler.java
index c924929..16784c2 100644
--- a/src/main/java/org/onosproject/segmentrouting/IcmpHandler.java
+++ b/src/main/java/org/onosproject/segmentrouting/IcmpHandler.java
@@ -387,7 +387,7 @@
                 /*
                  * We don't have to flood towards spine facing ports.
                  */
-                if (pkt.vlan().equals(VlanId.vlanId(SegmentRoutingManager.ASSIGNED_VLAN_NO_SUBNET))) {
+                if (pkt.vlan().equals(SegmentRoutingManager.INTERNAL_VLAN)) {
                     return;
                 }
                 log.debug("Flooding the reply to the subnet");