private static void removeJavaProperties(final Properties javaProps) {
    if (javaProps != null) {
      Properties props = System.getProperties();

      for (final Object o : javaProps.keySet()) {
        props.remove(o);
      }

      System.setProperties(props);
    }
  }
This is a hack using reflection to clear the static objects in JSSE since otherwise changing
the javax.* store related properties has no effect during the course of running dunit suite
unless the VMs are restarted.
geode-dunit/src/main/java/org/apache/geode/security/SecurityTestUtils.java