@Override
  protected RegionAttributes createCacheServerAttributes() {
    AttributesFactory factory = new AttributesFactory();
    factory.setPartitionAttributes((new PartitionAttributesFactory()).create());
    return factory.create();
  }
subclass of UpdatePropagationDUnitTest to exercise partitioned regions
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/UpdatePropagationPRDistributedTest.java