build: update waf to version 2.0.6

Fix discovered build issues

Change-Id: I9a861c955283c1b20cc5065a4baa22bd7c2ab0c1
diff --git a/src/tlv/adjacency-lsa.hpp b/src/tlv/adjacency-lsa.hpp
index f1854a4..20c775d 100644
--- a/src/tlv/adjacency-lsa.hpp
+++ b/src/tlv/adjacency-lsa.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2017,  The University of Memphis,
+/*
+ * Copyright (c) 2014-2018,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -17,7 +17,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #ifndef NLSR_TLV_ADJACENCY_LSA_HPP
 #define NLSR_TLV_ADJACENCY_LSA_HPP
@@ -153,6 +153,8 @@
   mutable ndn::Block m_wire;
 };
 
+NDN_CXX_DECLARE_WIRE_ENCODE_INSTANTIATIONS(AdjacencyLsa);
+
 inline AdjacencyLsa::iterator
 AdjacencyLsa::begin() const
 {