daemon+rib: add proper #include line for NDNLPv2 tags

refs #3755

Change-Id: I3ab279405aca7c7139e8d0e8e662eb3ea7200045
diff --git a/tests/rib/rib-manager.t.cpp b/tests/rib/rib-manager.t.cpp
index 30d1e1e..cfe0b3f 100644
--- a/tests/rib/rib-manager.t.cpp
+++ b/tests/rib/rib-manager.t.cpp
@@ -26,6 +26,7 @@
 #include "rib/rib-manager.hpp"
 #include "manager-common-fixture.hpp"
 
+#include <ndn-cxx/lp/tags.hpp>
 #include <ndn-cxx/management/nfd-rib-entry.hpp>
 #include <ndn-cxx/management/nfd-face-status.hpp>
 #include <ndn-cxx/management/nfd-face-event-notification.hpp>