@Test
  public void testProcessWithKerberos_DontUpdateKererosConfigProperty_WithCustomValueDifferentThanStackDefault() throws
    Exception {

    Capture<? extends Set<String>> captureUpdatedConfigTypes = testProcessWithKerberos("testPropertyValue",
      "defaultTestValue", null);

    Set<String> updatedConfigTypes = captureUpdatedConfigTypes.getValue();
    assertEquals(1, updatedConfigTypes.size());
  }
testConfigType config type shouldn't be in updatedConfigTypes, as testProperty in Blueprint is different that
stack default (custom value) ==> Kerberos config property shouldn't be updated
@throws Exception
ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterConfigurationRequestTest.java