Experiment with a lower max num PTOs.

Summary: The default we are using, 11, is probably excessive.

Reviewed By: yangchi

Differential Revision: D29273970

fbshipit-source-id: 24605e7d8feec43ee9b53880e8c510d1ca376d75

quic/server/state/ServerStateMachine.cpp

@@ -91,8 +91,7 @@ void recoverOrResetCongestionAndRttState(
 }
 
 void setExperimentalSettings(QuicServerConnectionState& conn) {
-  conn.lossState.reorderingThreshold =
-      std::numeric_limits<decltype(conn.lossState.reorderingThreshold)>::max();
+  conn.transportSettings.maxNumPTOs = 5;
 }
 } // namespace