mgmt+core: Moving SegmentPublisher to core/ and removing KeyChain from nfd::AppFace

This change ensures interface uniformity between nfd::AppFace and
ndn::Face and allow now templated version of SegmentPublisher to be used
with either.

Change-Id: I82e29528b13b37bd2ae27ef47db30e8c87c15a38
Refs: #1749
diff --git a/tests/daemon/mgmt/internal-face.cpp b/tests/daemon/mgmt/internal-face.cpp
index e76d80f..2215c0e 100644
--- a/tests/daemon/mgmt/internal-face.cpp
+++ b/tests/daemon/mgmt/internal-face.cpp
@@ -1,11 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014  Regents of the University of California,
- *                     Arizona Board of Regents,
- *                     Colorado State University,
- *                     University Pierre & Marie Curie, Sorbonne University,
- *                     Washington University in St. Louis,
- *                     Beijing Institute of Technology
+ * Copyright (c) 2014,  Regents of the University of California,
+ *                      Arizona Board of Regents,
+ *                      Colorado State University,
+ *                      University Pierre & Marie Curie, Sorbonne University,
+ *                      Washington University in St. Louis,
+ *                      Beijing Institute of Technology,
+ *                      The University of Memphis
  *
  * This file is part of NFD (Named Data Networking Forwarding Daemon).
  * See AUTHORS.md for complete list of NFD authors and contributors.
@@ -20,7 +21,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #include "mgmt/internal-face.hpp"
 #include "tests/daemon/face/dummy-face.hpp"
@@ -85,6 +86,9 @@
     m_noOnInterestFired = false;
   }
 
+protected:
+  ndn::KeyChain m_keyChain;
+
 private:
   std::vector<shared_ptr<Face> > m_faces;
   bool m_onInterestFired;
@@ -111,7 +115,7 @@
   face->onReceiveData += bind(&validatePutData, ref(didPutData), dataName, _1);
 
   Data testData(dataName);
-  face->sign(testData);
+  m_keyChain.sign(testData);
   face->put(testData);
 
   BOOST_REQUIRE(didPutData);