all: avoid usage of deprecated namespace ndn::Tlv

refs #2079

Change-Id: I3d8748929706726b55fe1a9a0f6ae00857ea3547
diff --git a/tests/daemon/mgmt/face-status-publisher-common.hpp b/tests/daemon/mgmt/face-status-publisher-common.hpp
index e2f19f1..11f4913 100644
--- a/tests/daemon/mgmt/face-status-publisher-common.hpp
+++ b/tests/daemon/mgmt/face-status-publisher-common.hpp
@@ -82,7 +82,7 @@
     }
   std::stringstream error;
   error << "expected type " << type << " got " << block.type();
-  throw ndn::Tlv::Error(error.str());
+  throw tlv::Error(error.str());
 }
 
 static inline uint64_t
@@ -96,7 +96,7 @@
       ++i;
       return readNonNegativeIntegerType(block, type);
     }
-  throw ndn::Tlv::Error("Unexpected end of FaceStatus");
+  throw tlv::Error("Unexpected end of FaceStatus");
 }
 
 class FaceStatusPublisherFixture : public BaseFixture
@@ -179,7 +179,7 @@
 
     // wrap the Face Statuses in a single Content TLV for easy parsing
     m_buffer.prependVarNumber(m_buffer.size());
-    m_buffer.prependVarNumber(ndn::Tlv::Content);
+    m_buffer.prependVarNumber(tlv::Content);
 
     ndn::Block parser(m_buffer.buf(), m_buffer.size());
     parser.parse();