Feature/modifying conf

• move osrm graph in stored data bucket. Respect new directory pattern for MR : pivot-road2-to-graph-road2!18 (merged)
• download only graph for requested couple profile/optimization for OSRM
• add modifying status for configuration:
  • treat as publication
  • update publication to remove unused graph for ORSM

Missing : we should download content for S3 only if data is changed. Waiting for issue pivot-road2-to-graph-road2#13 (closed)