Adapt service for the new development environment (no 3rd party tools required)

[dgaubert]

In order to run tests in the new development environment:

• stop using pg tools (psql, pg_dump, ...) and redis-cli to setup fixtures
• clean tests leftovers
• adapt SQL scripts to be run with node-postgres
• adapt Redis set up to be run with node-redis
• fix tests where they create keys in Redis that weren't cleaned

Note: I guess we can stop using dedicated images for testing purposes

[shortcut-integration[bot]]

This pull request has been linked to Clubhouse Story #132843: Reduce Windshaft log verbosity.