mgmt: change strategy-choice/set response codes

If the specified strategy name cannot be instantiated,
respond with 404 status code.

refs #3868

Change-Id: I8275923f149ec9c2ed82e485e933d16320bd3a03
diff --git a/daemon/mgmt/strategy-choice-manager.hpp b/daemon/mgmt/strategy-choice-manager.hpp
index 5520790..00d4dd9 100644
--- a/daemon/mgmt/strategy-choice-manager.hpp
+++ b/daemon/mgmt/strategy-choice-manager.hpp
@@ -47,18 +47,15 @@
 
 private:
   void
-  setStrategy(const Name& topPrefix, const Interest& interest,
-              ControlParameters parameters,
+  setStrategy(ControlParameters parameters,
               const ndn::mgmt::CommandContinuation& done);
 
   void
-  unsetStrategy(const Name& topPrefix, const Interest& interest,
-                ControlParameters parameters,
+  unsetStrategy(ControlParameters parameters,
                 const ndn::mgmt::CommandContinuation& done);
 
   void
-  listChoices(const Name& topPrefix, const Interest& interest,
-              ndn::mgmt::StatusDatasetContext& context);
+  listChoices(ndn::mgmt::StatusDatasetContext& context);
 
 private:
   strategy_choice::StrategyChoice& m_table;