fib: add EndpointId field in NextHop record

refs: #4284

Change-Id: If0cfc21cfa81d6fa3c1590ecdce8fbbc1ea95e13
diff --git a/daemon/table/fib-nexthop.cpp b/daemon/table/fib-nexthop.cpp
index e554362..e456c15 100644
--- a/daemon/table/fib-nexthop.cpp
+++ b/daemon/table/fib-nexthop.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2016,  Regents of the University of California,
+/*
+ * Copyright (c) 2014-2019,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -28,8 +28,9 @@
 namespace nfd {
 namespace fib {
 
-NextHop::NextHop(Face& face)
+NextHop::NextHop(Face& face, uint64_t endpointId)
   : m_face(&face)
+  , m_endpointId(endpointId)
   , m_cost(0)
 {
 }