private Configuration createConfigurationsForHostGroup() {
    Map<String, Map<String, String>> firstLevelConfig = Maps.newHashMap();
    firstLevelConfig.put("hdfs-site", new HashMap<>());
    firstLevelConfig.put("spark-env", new HashMap<>());
    firstLevelConfig.put("cluster-env", new HashMap<>());
    firstLevelConfig.put("global", new HashMap<>());

    Map<String, Map<String, Map<String, String>>> firstLevelAttributes = Maps.newHashMap();
    firstLevelAttributes.put("hdfs-site", new HashMap<>());

    Map<String, Map<String, String>> secondLevelConfig = Maps.newHashMap();
    secondLevelConfig.put("admin-properties", new HashMap<>());
    Map<String, Map<String, Map<String, String>>> secondLevelAttributes = Maps.newHashMap();
    secondLevelAttributes.put("admin-properties", new HashMap<>());


    Configuration secondLevelConf = new Configuration(secondLevelConfig, secondLevelAttributes);
    return new Configuration(firstLevelConfig, firstLevelAttributes, secondLevelConf);
  }
testConfigType config type shouldn't be in updatedConfigTypes, as testProperty in Blueprint is a custom value
(no default value in stack for testProperty)
==> Kerberos config property shouldn't be updated
@throws Exception
ambari-server/src/test/java/org/apache/ambari/server/topology/ClusterConfigurationRequestTest.java