tests: refactor EthernetFixture

Also, use BOOST_TEST_INFO_SCOPE in a few places.

Change-Id: I113f326207825949ed9d3d22ade0654976d49b76
diff --git a/tests/daemon/face/unicast-ethernet-transport.t.cpp b/tests/daemon/face/unicast-ethernet-transport.t.cpp
index 373bcc3..83e4b54 100644
--- a/tests/daemon/face/unicast-ethernet-transport.t.cpp
+++ b/tests/daemon/face/unicast-ethernet-transport.t.cpp
@@ -23,7 +23,7 @@
  * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "ethernet-fixture.hpp"
+#include "ethernet-transport-fixture.hpp"
 
 #include "common/global.hpp"
 
@@ -34,7 +34,7 @@
 using namespace nfd::face;
 
 BOOST_AUTO_TEST_SUITE(Face)
-BOOST_FIXTURE_TEST_SUITE(TestUnicastEthernetTransport, EthernetFixture)
+BOOST_FIXTURE_TEST_SUITE(TestUnicastEthernetTransport, EthernetTransportFixture)
 
 BOOST_AUTO_TEST_CASE(StaticProperties)
 {