@After
  public void tearDown() {
    cache.close();
  }
Added specifically to test scenario of defect TRAC #47181.

<p>
TRAC #47181: Combination of mcast-port=0, enforce-unique-host=true and redundancy-zone=x causes
UnsupportedOperationException

<p>
Extracted from PartitionedRegionBucketCreationDistributionDUnitTest.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/EnforceUniqueHostForLonerIntegrationTest.java