tests: IdentityManagementFixture no longer derives from BaseFixture

Also rename it to KeyChainFixture

Refs: #4528
Change-Id: Id86f4affc9c4c9ae159912430cc3e78557bf1ac2
diff --git a/tests/daemon/face/generic-link-service.t.cpp b/tests/daemon/face/generic-link-service.t.cpp
index 13d9476..00b6517 100644
--- a/tests/daemon/face/generic-link-service.t.cpp
+++ b/tests/daemon/face/generic-link-service.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2018,  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,
@@ -27,7 +27,7 @@
 #include "face/face.hpp"
 
 #include "dummy-transport.hpp"
-#include "tests/identity-management-fixture.hpp"
+#include "tests/key-chain-fixture.hpp"
 #include "tests/test-common.hpp"
 
 #include <ndn-cxx/lp/empty-value.hpp>
@@ -45,7 +45,7 @@
 
 using nfd::Face;
 
-class GenericLinkServiceFixture : public IdentityManagementTimeFixture
+class GenericLinkServiceFixture : public UnitTestTimeFixture, public KeyChainFixture
 {
 protected:
   GenericLinkServiceFixture()