face: replace EventEmitter usage with Signal

refs #2300

Change-Id: I17d0d65d2c474b17dd9f23f271a6144b0b4fbc07
diff --git a/tests/daemon/mgmt/face-status-publisher.cpp b/tests/daemon/mgmt/face-status-publisher.cpp
index 145fe0e..87ebba2 100644
--- a/tests/daemon/mgmt/face-status-publisher.cpp
+++ b/tests/daemon/mgmt/face-status-publisher.cpp
@@ -53,8 +53,8 @@
 
   ndn::EncodingBuffer buffer;
 
-  m_face->onReceiveData +=
-    bind(&FaceStatusPublisherFixture::decodeFaceStatusBlock, this, _1);
+  m_face->onReceiveData.connect(
+      bind(&FaceStatusPublisherFixture::decodeFaceStatusBlock, this, _1));
 
   m_publisher.publish();
   BOOST_REQUIRE(m_finished);