OPENDJ-3187 Remove support for upgrading from versions older than 2.6.0

Matthew Swift

29.08.2016 326568b2dd4a079b023b977b9f96c321f5f2669d

 opendj-server-legacy/src/main/java/org/opends/server/tools/upgrade/UpgradeTasks.java

@@ -830,61 +830,6 @@
  }

  /**
   * Renames the SNMP security config file if it exists. Since 2.5.0.7466 this
   * file has been renamed.
   *
   * @param summary
   *          The summary of this upgrade task.
   * @return An upgrade task which renames the old SNMP security config file if
   *         it exists.
   */
  public static UpgradeTask renameSnmpSecurityConfig(final LocalizableMessage summary)
  {
    return new AbstractUpgradeTask()
    {
      @Override
      public void perform(final UpgradeContext context) throws ClientException
      {
        /*
         * Snmp config file contains old name in old version(like 2.4.5), in
         * order to make sure the process will still work after upgrade, we need
         * to rename it - only if it exists.
         */
        final File snmpDir = UpgradeUtils.configSnmpSecurityDirectory;
        if (snmpDir.exists())
        {
          ProgressNotificationCallback pnc = new ProgressNotificationCallback(INFORMATION, summary, 0);
          try
          {
            final File oldSnmpConfig = new File(snmpDir, "opends-snmp.security");
            if (oldSnmpConfig.exists())
            {
              context.notifyProgress(pnc.setProgress(20));
              logger.debug(summary);

              final File snmpConfig = new File(snmpDir, "opendj-snmp.security");
              FileManager.rename(oldSnmpConfig, snmpConfig);

              context.notifyProgress(pnc.setProgress(100));
            }
          }
          catch (final Exception ex)
          {
            LocalizableMessage msg = ERR_UPGRADE_RENAME_SNMP_SECURITY_CONFIG_FILE.get(ex.getMessage());
            throw unexpectedException(context, pnc, msg);
          }
        }
      }

      @Override
      public String toString()
      {
        return String.valueOf(summary);
      }
    };
  }

  /**
   * Removes the specified file from the file-system.
   *
   * @param file