added performance test for method call with pipe

...throughput/MethodCallThoughputTimestampAnalysis2Test.java

...teetime/examples/throughput/methodcall/AbstractStage.java

...teetime/examples/throughput/methodcall/CollectorSink.java

...ava/teetime/examples/throughput/methodcall/InputPort.java

.../throughput/methodcall/MethodCallThroughputAnalysis2.java

...va/teetime/examples/throughput/methodcall/NoopFilter.java

...eetime/examples/throughput/methodcall/ObjectProducer.java

...va/teetime/examples/throughput/methodcall/OutputPort.java

...est/java/teetime/examples/throughput/methodcall/Pipe.java

...java/teetime/examples/throughput/methodcall/Pipeline.java

...st/java/teetime/examples/throughput/methodcall/Stage.java

.../examples/throughput/methodcall/StartTimestampFilter.java

...e/examples/throughput/methodcall/StopTimestampFilter.java