Proof of concept for OSRM working with telenav’s traffic service

[CodeBear801]

[Description]
Confirm the direction could work. Verify the result of customization and frequency of live traffic update based on small data provided by traffic team.

[Delivery]

• Traffic Input format
• Draft estimation for customize schedule
• Draft load estimation

[CodeBear801]

Here records some of our previous discussions:
#1. Modify C++ code, generate an new tool called "custmizer_telenav_traffic.bin"
Which would download traffic.json.gz -> convert to osrm traffic.csv -> osrm customization logic.
There would be an external script regularly call this file

#2. Put all logic outside of existing OSRM's logic(prefer)
- Dump mapping table of wayid-> nodeid
- Use script to generate traffic.csv
- Keep all OSRM's customization logic stable

[wangyoucao577]

draft design: https://github.com/Telenav/osrm-backend/blob/feature/with-telenav-traffic/docs/design/osrm-with-telenav-traffic.md

[wangyoucao577]

Go and Python implementation of osrm_traffic_updater. It can pull traffic data from traffic_proxy then dump to traffic.csv.
See: https://github.com/Telenav/osrm-backend/tree/feature/with-telenav-traffic/traffic_updater

[wangyoucao577]

First version of OSRM with telenav PBF data and telenav traffic has been launched, traffic will be updated per 20 minutes.