face: minimal UDP permanent face

Change-Id: I44f652b95c911667107fd30829c7ce6e5acab706
Refs: #2989
diff --git a/daemon/face/udp-face.hpp b/daemon/face/udp-face.hpp
index 333bae2..a7541a5 100644
--- a/daemon/face/udp-face.hpp
+++ b/daemon/face/udp-face.hpp
@@ -39,7 +39,7 @@
 {
 public:
   UdpFace(const FaceUri& remoteUri, const FaceUri& localUri,
-          protocol::socket socket, bool isOnDemand,
+          protocol::socket socket, ndn::nfd::FacePersistency persistency,
           const time::seconds& idleTimeout);
 
   ndn::nfd::FaceStatus