Feature/#99 add coastlines to osm data

Created by: hixi

Adds

• Coastlines
• Water Polygons
• Land Polygons

From external database source.

Changes

• Schemas are now being created at the same place as functions
• use wait-for-it instead of our own setup to wait for the database to come up

Reviewed by:

• @das-g

closes geometalab/osmaxx-conversion-service#99