DDF-605  updated to make solr external provider installed by default vs. embedded provider
DDF-605  cleaned up redundant suffix on serialized metacard field
DDF-605  embedded provider now includes Cassandra in update chain
DDF-605  updated to support backing up to Cassandra
DDF-605  removed writeBundleFilesTo() since the embedded provider no longer has the solr
config files in its bundle as a resource; they are now installed by platfrom app
DDF-579  remove references to cassandra