tests: avoid deprecated boost headers

Change-Id: I1b79c9422109d2ce8832fd386b524bd9ffffa231
diff --git a/tests/tools/mock-nfd-mgmt-fixture.hpp b/tests/tools/mock-nfd-mgmt-fixture.hpp
index 7b43ea9..40dc3ba 100644
--- a/tests/tools/mock-nfd-mgmt-fixture.hpp
+++ b/tests/tools/mock-nfd-mgmt-fixture.hpp
@@ -34,6 +34,8 @@
 #include <ndn-cxx/mgmt/nfd/control-response.hpp>
 #include <ndn-cxx/util/dummy-client-face.hpp>
 
+#include <boost/concept/assert.hpp>
+
 namespace nfd {
 namespace tools {
 namespace tests {