Do not compile ChronoSync support by default

ChronoSync dependency is now made optional
and is kept for testing purposes only.

Also change sig-type to ecdsa-sha256 in nlsr.conf
as ndn-cxx now has strict checking for it.

refs: #5147

Change-Id: I95c9fb844681ebf2c4e7bbb03cc7796a0795de83
diff --git a/tests/test-lsa-rule.cpp b/tests/test-lsa-rule.cpp
index e6d4458..4e7b3b3 100644
--- a/tests/test-lsa-rule.cpp
+++ b/tests/test-lsa-rule.cpp
@@ -25,13 +25,14 @@
 
 #include <ndn-cxx/interest.hpp>
 #include <ndn-cxx/security/key-chain.hpp>
-#include <ndn-cxx/util/dummy-client-face.hpp>
 #include <ndn-cxx/security/signing-helpers.hpp>
 #include <ndn-cxx/security/signing-info.hpp>
+#include <ndn-cxx/util/dummy-client-face.hpp>
 
 #include <boost/filesystem.hpp>
-#include <boost/property_tree/ptree.hpp>
+#include <boost/lexical_cast.hpp>
 #include <boost/property_tree/info_parser.hpp>
+#include <boost/property_tree/ptree.hpp>
 
 using namespace ndn;