Abstracting testbed prepended name components

Change-Id: Ieb3b3971fb09e31ddb15d85b5907ee7be41ef6ae
diff --git a/src/main.cpp b/src/main.cpp
index 2fd441d..2a0f69a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -50,6 +50,11 @@
   }
 };
 
+namespace ntorrent {
+
+const char * SharedConstants::commonPrefix = "/ndn";
+
+} // end ntorrent
 } // end ndn
 
 // TODO(msweatt) Add options verification