security: Construct KeyChain from configuration file.

Change-Id: Iaddac24e2c4e199fdde83fa1d0067a87e18729c4
Refs: #1532
diff --git a/tests/transport/test-unix-transport.cpp b/tests/transport/test-unix-transport.cpp
index 7e3d36f..8b74523 100644
--- a/tests/transport/test-unix-transport.cpp
+++ b/tests/transport/test-unix-transport.cpp
@@ -40,6 +40,7 @@
 BOOST_AUTO_TEST_CASE(TestGetDefaultSocketNameOk)
 {
   setenv("HOME", "tests/transport/test-homes/ok", 1);
+
   ConfigFile config;
   BOOST_REQUIRE_EQUAL(UnixTransport::getDefaultSocketName(config), "/tmp/test/nfd.sock");
 }