Restructure everything about `osm.pgosm_flex`

[rustprooflabs]

Details

WIP: This should close #304.

Initial steps to move osm.pgosm_flex record management from Lua into Python.

The DDL code is moving into Sqitch and no longer allows skipping sqitch deployment.

:warning: Breaking changes :warning:

Removing columns from osm.pgosm_flex table.

• import_uuid
• default_date
• osm2pgsql_replication
• osm2pgsql_mode

Renamed --data-only to --skip-qgis-style. This slightly changed the exact behavior. The original would also skip the sqitch deployment step, now that is not optional.

Additions

Adding columns to the osm.pgosm_flex table

• layerset
• import_mode

Still to do

Test w/ replication, polish notes on changes, solicit feedback.

[rustprooflabs]

Removing column osm2pgsql_replication and osm2pgsql_mode in favor of storing import_mode in a jsonb column.

Passes make and basic testing looks good. Need to double check how it looks with --replication next.

[rustprooflabs]

The current commit is on docker hub as :dev image. To test:

docker pull rustprooflabs/pgosm-flex:dev