Switch to new KeyChain where possible

signed_interest::POS_RANDOM_VAL and signed_interest::POS_TIMESTAMP
constants are deprecated. Use command_interest:: equivalents instead.

This commit also includes fix for the backward compatibility regression
due to move of deprecated TPM/PublicInfo header files.

Change-Id: Ic3b008fc6758f3ac83f191158b6ac0789483f90d
Refs: #3098
diff --git a/tests/unit-tests/mgmt/dispatcher.t.cpp b/tests/unit-tests/mgmt/dispatcher.t.cpp
index 76e5c6c..a1506a0 100644
--- a/tests/unit-tests/mgmt/dispatcher.t.cpp
+++ b/tests/unit-tests/mgmt/dispatcher.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2016 Regents of the University of California.
+ * Copyright (c) 2013-2017 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -37,7 +37,7 @@
 BOOST_AUTO_TEST_SUITE(Mgmt)
 BOOST_AUTO_TEST_SUITE(TestDispatcher)
 
-class DispatcherFixture : public IdentityManagementTimeFixture
+class DispatcherFixture : public IdentityManagementV1TimeFixture
 {
 public:
   DispatcherFixture()