tests: Enable isolation of KeyChain during run of unit/integrated tests

Change-Id: Ia136e4bb074c14e8d824f563594cbc0ad7592c3b
Refs: #3655
diff --git a/tests/unit-tests/management/nfd-controller-fixture.hpp b/tests/unit-tests/management/nfd-controller-fixture.hpp
index e9ffde2..9894468 100644
--- a/tests/unit-tests/management/nfd-controller-fixture.hpp
+++ b/tests/unit-tests/management/nfd-controller-fixture.hpp
@@ -32,11 +32,11 @@
 
 using namespace ndn::tests;
 
-class ControllerFixture : public security::IdentityManagementTimeFixture
+class ControllerFixture : public IdentityManagementTimeFixture
 {
 protected:
   ControllerFixture()
-    : face(io)
+    : face(io, m_keyChain)
     , controller(face, m_keyChain)
     , failCallback(bind(&ControllerFixture::fail, this, _1, _2))
   {