public static void init(MasterRemote master) {
    DUnitEnv.set(new StandAloneDUnitEnv(master));
    addSuspectFileAppender(getWorkspaceDir());

    // Free off heap memory when disconnecting from the distributed system
    System.setProperty(GEMFIRE_PREFIX + "free-off-heap-memory", "true");

    // indicate that this CM is controlled by the eclipse dunit.
    System.setProperty(LAUNCHED_PROPERTY, "true");
  }
Add an appender to Log4j which sends all INFO+ messages to a separate file which will be used
later to scan for suspect strings. The pattern of the messages conforms to the original log
format so that hydra will be able to parse them.
geode-dunit/src/main/java/org/apache/geode/test/dunit/internal/DUnitLauncher.java