Replace Boost.MPL with Mp11

Change-Id: I9e0f3cd0169a733f602ff5fc1457f63d6499387d
diff --git a/tests/unit/security/key-chain.t.cpp b/tests/unit/security/key-chain.t.cpp
index 15bf4cd..ac45ee7 100644
--- a/tests/unit/security/key-chain.t.cpp
+++ b/tests/unit/security/key-chain.t.cpp
@@ -28,8 +28,7 @@
 #include "tests/unit/clock-fixture.hpp"
 #include "tests/unit/test-home-env-saver.hpp"
 
-#include <openssl/opensslv.h>
-#include <boost/mpl/vector.hpp>
+#include <boost/mp11/list.hpp>
 
 namespace ndn::tests {
 
@@ -530,7 +529,7 @@
   }
 };
 
-using SigningTests = boost::mpl::vector<
+using SigningTests = boost::mp11::mp_list<
   RsaSigning<DataPkt>,
   RsaSigning<InterestV02Pkt>,
   RsaSigning<InterestV03Pkt>,