face: group parameters to createFace and connect into a common structure

Change-Id: Icb6857602ed7e897be6c5334b05be23793d133bb
diff --git a/daemon/face/unix-stream-factory.hpp b/daemon/face/unix-stream-factory.hpp
index d87ffd1..de2391f 100644
--- a/daemon/face/unix-stream-factory.hpp
+++ b/daemon/face/unix-stream-factory.hpp
@@ -50,7 +50,7 @@
                 FaceSystem::ConfigContext& context) override;
 
   void
-  createFace(const CreateFaceParams& params,
+  createFace(const CreateFaceRequest& req,
              const FaceCreatedCallback& onCreated,
              const FaceCreationFailedCallback& onFailure) override;