ISIS protocol manual merge from 1.6 due to cherry pick merge conflict

Change-Id: I6c3abf6a83ddaeba76293dc7864fcec88e9b4e7e
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/subtlv/SubTlvType.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/subtlv/SubTlvType.java
index 5caecbf..027a50e 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/subtlv/SubTlvType.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/subtlv/SubTlvType.java
@@ -44,6 +44,10 @@
      */
     INTERFACEADDRESS(6),
     /**
+     * Represents traffic engineering neighbor address TLV.
+     */
+    NEIGHBORADDRESS(8),
+    /**
      * Represents traffic engineering unreserved bandwidth TLV.
      */
     UNRESERVEDBANDWIDTH(11);