Integrated changes from PR #1569 into this

Author: JS Fauteux

com.unity.netcode.adapter.utp/Runtime/UnityTransport.cs

@@ -829,7 +829,11 @@ public void CreateDriver(UnityTransport transport, out NetworkDriver driver,
                 unreliableFragmentedPipeline = driver.CreatePipeline(
                     typeof(FragmentationPipelineStage),
                     typeof(SimulatorPipelineStage),
-                    typeof(SimulatorPipelineStageInSend));
+                    typeof(SimulatorPipelineStageInSend)
+#if MULTIPLAYER_TOOLS
+                    ,typeof(NetworkMetricsPipelineStage)
+#endif
+                );
                 unreliableSequencedFragmentedPipeline = driver.CreatePipeline(
                     typeof(FragmentationPipelineStage),
                     typeof(UnreliableSequencedPipelineStage),