@Before
  public void setUp() throws Exception {
    server = getVM(0);
    client = getVM(1);

    regionName = getClass().getSimpleName();
  }
Server should terminate client function execution when it times out. Client sends
CLIENT_FUNCTION_TIMEOUT to server when default is overridden by client.

<p>
TRAC #51193: The function execution connection on the server is never terminated even if the
gemfire.CLIENT_FUNCTION_TIMEOUT property is set
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/execute/ClientFunctionTimeoutRegressionTest.java