Connecting OSM, Postgres, OSRM

[woodbri]

This question came up on the OSRM issues list and it generally has to do with postgres, routing, OSRM, lua, and might have some interesting ideas that can come out of it:
Project-OSRM/osrm-backend#1520

It also represents a use case for osm2pgrouting regarding turn restrictions that will need to be solved in osm2pgrouting.