src: set best-route strategy for certificate prefixes

refs: #4881

Change-Id: I655c261233e478bf01ff298b74af5eb62a33ffaf
diff --git a/src/route/fib.hpp b/src/route/fib.hpp
index 2d4f47f..f2d952a 100644
--- a/src/route/fib.hpp
+++ b/src/route/fib.hpp
@@ -237,6 +237,10 @@
   void
   refreshEntry(const ndn::Name& name, afterRefreshCallback refreshCb);
 
+public:
+  static const std::string MULTICAST_STRATEGY;
+  static const std::string BEST_ROUTE_V2_STRATEGY;
+
 private:
   ndn::Scheduler& m_scheduler;
   int32_t m_refreshTime;