mgmt: echo FibManagementOptions as response body on command success

Add support for commands with FaceId == zero

refs: #1236

Change-Id: If67e955668d5a3622893582111601d358df9137e
diff --git a/daemon/mgmt/manager-base.hpp b/daemon/mgmt/manager-base.hpp
index e8d63cf..8fb8cd3 100644
--- a/daemon/mgmt/manager-base.hpp
+++ b/daemon/mgmt/manager-base.hpp
@@ -30,6 +30,11 @@
   setResponse(ControlResponse& response,
               uint32_t code,
               const std::string& text);
+  void
+  setResponse(ControlResponse& response,
+              uint32_t code,
+              const std::string& text,
+              const Block& body);
 
   void
   sendResponse(const Name& name,
@@ -53,6 +58,16 @@
   response.setText(text);
 }
 
+inline void
+ManagerBase::setResponse(ControlResponse& response,
+                         uint32_t code,
+                         const std::string& text,
+                         const Block& body)
+{
+  setResponse(response, code, text);
+  response.setBody(body);
+}
+
 
 } // namespace nfd