public static void set(DUnitEnv dunitEnv) {
    instance = dunitEnv;
  }
This class provides an abstraction over the environment that is used to run dunit. This will
delegate to the hydra or to the standalone dunit launcher as needed.

<p>
Any dunit tests that rely on hydra configuration should go through here, so that we can separate
them out from depending on hydra and run them on a different VM launching system.
geode-dunit/src/main/java/org/apache/geode/test/dunit/DUnitEnv.java