face+table: move EndpointId typedef out of Transport and use it in table

refs: #4843

Change-Id: I2b200518a57b21d66eae4360166afda31c3bf11b
diff --git a/daemon/face/multicast-udp-transport.cpp b/daemon/face/multicast-udp-transport.cpp
index 6e99a1c..ec50d7f 100644
--- a/daemon/face/multicast-udp-transport.cpp
+++ b/daemon/face/multicast-udp-transport.cpp
@@ -191,7 +191,7 @@
 }
 
 template<>
-Transport::EndpointId
+EndpointId
 DatagramTransport<boost::asio::ip::udp, Multicast>::makeEndpointId(const protocol::endpoint& ep)
 {
   if (ep.address().is_v4()) {