face: connect to Transport during construction

This allows DummyClientFace to receive packets without sending.

refs #2318

Change-Id: I7451d2c4a873e4680cfb380c9029b1edcd4af7fb
diff --git a/src/util/dummy-client-face.cpp b/src/util/dummy-client-face.cpp
index a7ab505..ff24326 100644
--- a/src/util/dummy-client-face.cpp
+++ b/src/util/dummy-client-face.cpp
@@ -166,7 +166,7 @@
 shared_ptr<DummyClientFace>
 makeDummyClientFace(const DummyClientFace::Options& options)
 {
-  // cannot use make_shared<DummyClientFace> before DummyClientFace constructor is private
+  // cannot use make_shared<DummyClientFace> because DummyClientFace constructor is private
   return shared_ptr<DummyClientFace>(
          new DummyClientFace(options, make_shared<DummyClientFace::Transport>()));
 }
@@ -175,7 +175,7 @@
 makeDummyClientFace(boost::asio::io_service& ioService,
                     const DummyClientFace::Options& options)
 {
-  // cannot use make_shared<DummyClientFace> before DummyClientFace constructor is private
+  // cannot use make_shared<DummyClientFace> because DummyClientFace constructor is private
   return shared_ptr<DummyClientFace>(
          new DummyClientFace(options, make_shared<DummyClientFace::Transport>(),
                              ref(ioService)));