nlsr: Pass keyChain to NLSR constructor

refs: #3742

Change-Id: I186784da2989aa8bcc396c81c4fc80254a6f313a
diff --git a/tests/test-common.hpp b/tests/test-common.hpp
index d7ace96..d326765 100644
--- a/tests/test-common.hpp
+++ b/tests/test-common.hpp
@@ -29,6 +29,7 @@
 #include <boost/test/unit_test.hpp>
 
 #include <ndn-cxx/util/scheduler.hpp>
+#include <ndn-cxx/security/key-chain.hpp>
 #include <ndn-cxx/util/time-unit-test-clock.hpp>
 
 namespace nlsr {
@@ -45,6 +46,7 @@
 protected:
   boost::asio::io_service g_ioService;
   ndn::Scheduler g_scheduler;
+  ndn::KeyChain g_keyChain;
 };
 
 class UnitTestTimeFixture : public BaseFixture