* * setting up a pvc to allow for neo4j backups

* * allowing pvc to be turned off
* allowing pvc size to be configurable

* ISSUE 196
* added neo4j plugins
* added chart versions
* removed image pull policy never from metadata service

* * PR comment fix; using the correct maven repo urls

* (ISSUE 196) - added neo4j s3 backup cron pod

* * added missing restartPolicy

* (ISSUE 196)
* updated for PR comments
* using export schema, export graphml functions