Run development fixtures on CI

What does this MR do?

This MR adds two pipeline jobs to execute the development fixtures (on test env) for FOSS and EE. The goal is to discover runtime errors during the CI phase.

Implementation

Not so great, I'm looking for a better way of doing it. Currently seed_fu respects Rails.env and we have the fixtures in development folder. When running on CI, the Rails.env is test. I work around this by moving the fixtures to a custom folder and setting the FIXTURE_PATH env variable.

Does this MR meet the acceptance criteria?

Conformity

• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

closes #36968 (closed)