Description

Overwrite database config/credentials when WITH_BRANCH_POSTGRES_DB_MANAGEMENT is enabled. Belongs to https://github.com/hpi-schul-cloud/dof_app_deploy/pull/834 Should be merged first.

Links to Tickets or other pull requests

[ ] All points were discussed with the ticket creator, support-team or product owner. The code upholds all quality guidelines from the PR-template.

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