refactor: Simplify PostgreSQL conf template sourcing

The source path for PostgreSQL configuration templates has been simplified.

Previously, underscores in `ext_item` were removed when constructing the template filename. This change removes that transformation, directly using `{{ ext_item }}.conf`. This implies that template files in `files/postgresql_config/conf.d/` now match the `ext_item` loop variables directly (e.g., `auto_explain.conf`).

Author: hunleyd

ansible/tasks/finalize-ami.yml

@@ -8,7 +8,7 @@
   ansible.builtin.template:
     dest: "/etc/postgresql-custom/conf.d/{{ ext_item }}.conf"
     group: 'postgres'
-    src: "files/postgresql_config/conf.d/{{ ext_item | split('_') | join('') }}.conf"
+    src: "files/postgresql_config/conf.d/{{ ext_item }}.conf"
   loop:
     - auto_explain
     # - pg_cron