public UpgradeActionOperations setConfigurationChanges(
      List<ConfigurationChanges> configurationChanges) {
    m_configurationChanges = configurationChanges;
    return this;
  }
Sets configuration changes which are a part of the actions to be performed
during the upgrade.

@param configurationChanges
         the configuration changes to make.
@return an instance of the {@link UpgradeActionOperations} with the value
        set.
ambari-server-spi/src/main/java/org/apache/ambari/spi/upgrade/UpgradeActionOperations.java