OGM-1309 Move the Neo4j db files to its own directory
OGM-1309 Move the Neo4j db files to its own directory

DavideD/hibernate-ogm,hibernate/hibernate-ogm,DavideD/hibernate-ogm,Sanne/hibernate-ogm,DavideD/hibernate-ogm,Sanne/hibernate-ogm,DavideD/hibernate-ogm,schernolyas/hibernate-ogm,Sanne/hibernate-ogm,schernolyas/hibernate-ogm,hibernate/hibernate-ogm,hibernate/hibernate-ogm,hibernate/hibernate-ogm,schernolyas/hibernate-ogm,Sanne/hibernate-ogm