Extend `marginalia` to provide `db_config_name`
What does this MR do?
This db_config_name
that describes on what connection the given query was executed as defined by config/database.yml
and load balancing configuration.
Fixes: #337433 (closed)
Conformity
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This change is backwards compatible across updates, or this does not apply.
Edited by Kamil Trzciński (Back 2025-01-01)