[bitnami/discourse] feat: optional Postgres database setup w/o superadmin

[acelinkio]

Name and Version

bitnami/discourse:3.3.2-debian-12-r3

What is the problem this feature will solve?

The current image does not support the case where an Postgres operator takes care of creating the database, manages extensions, and handles users/role permissions. This is somewhat similar to #52036.

In the end I would like to avoid leveraging the Postgres super admin permissions--allowing this to live in a multi-tenant postgres cluster.

What is the feature you are proposing to solve the problem?

A parameter to assume SuperAdmin permissions are not needed and that the database/extensions/permissions have already been configured.

What alternatives have you considered?

Creating a dedicated Postgres cluster dedicated to Discourse usage.