tools: nfdc creates Face and KeyChain in main function

refs #3749

Change-Id: I169ad766634371b0192ebae640355298b78aaaa4
diff --git a/tools/nfdc/status-main.cpp b/tools/nfdc/status-main.cpp
index 0f87ab1..c39f694 100644
--- a/tools/nfdc/status-main.cpp
+++ b/tools/nfdc/status-main.cpp
@@ -114,7 +114,7 @@
 }
 
 int
-statusMain(const std::vector<std::string>& args)
+statusMain(const std::vector<std::string>& args, Face& face, KeyChain& keyChain)
 {
   int exitCode = -1;
   Options options;
@@ -123,8 +123,6 @@
     return exitCode;
   }
 
-  Face face;
-  KeyChain keyChain;
   unique_ptr<Validator> validator = make_unique<ndn::ValidatorNull>();
   CommandOptions ctrlOptions;