public List<String> getStackUpgradeAutoRetryCustomCommandNamesToIgnore() {
    String value = getProperty(STACK_UPGRADE_AUTO_RETRY_CUSTOM_COMMAND_NAMES_TO_IGNORE);
    List<String> list = convertCSVwithQuotesToList(value);
    listToLowerCase(list);
    return list;
  }
If auto-retry during stack upgrade is enabled, skip any tasks whose custom command name contains at least one
of the strings in the following CSV property. Note that values have to be enclosed in quotes and separated by commas.
@return
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java