Print message about editing the filter-drupal.xml file after site add or delete

[patdunlavey]

When a site is added using sitespinner, corresponding entries in the fedora server's filter-drupal.xml file are not created. When a site is deleted, entries in the fedora server's filter-drupal.xml file are not deleted, resulting in errors being generated in the fedora.log.

Because the fedora server can be a separate server, and could be firewalled - particularly in a production scenario, it is not practical to try to make the site add and delete commands alter the filter-drupal.xml entries.

Therefore the best solution is to simply print out a message after adding or deleting a site, saying that you need to edit the filter-drupal.xml file.