build windshaft-onprem

[alberhander]

• Related: https://app.clubhouse.io/cartoteam/stories/space/130130/dockerized-onprem
• Depends on: https://github.com/CartoDB/Windshaft-cartodb-private/pull/3

[alberhander]

@thedae can you help me adding the routing and logger code? I tried reproducing the sql-api changes, but the code is different here.

[thedae]

Done, I've applied the solution of sql-api: https://github.com/CartoDB/CartoDB-SQL-API/pull/678

[alberhander]

• Tested locally in on-prem and dev-env :heavy_check_mark: