Change namespace of DummyClientFace, Signal, Segmenter, SegmentFetcher

refs #3940

Change-Id: Ia3c9b4adcca9ff79a14be705ca9da525914f3dff
diff --git a/tests/test-nlsr.cpp b/tests/test-nlsr.cpp
index b4f979c..ed8ce66 100644
--- a/tests/test-nlsr.cpp
+++ b/tests/test-nlsr.cpp
@@ -99,7 +99,7 @@
   }
 
 public:
-  ndn::util::DummyClientFace m_face{m_io, m_keyChain, {true, true}};
+  ndn::DummyClientFace m_face{m_io, m_keyChain, {true, true}};
 };
 
 class NlsrFixture : public MockNfdMgmtFixture
@@ -138,7 +138,7 @@
   AdjacencyList& neighbors;
   uint32_t nSuccessCallbacks;
   uint32_t nFailureCallbacks;
-  ndn::util::signal::ScopedConnection connection;
+  ndn::signal::ScopedConnection connection;
 };
 
 BOOST_FIXTURE_TEST_SUITE(TestNlsr, NlsrFixture)