Automate the creation of database/user/password into K8 for Bitnami helm chart postgresql

Bitnami Engineer here, you can use an initial script to create the database and all the things you need with initdbScripts: https://github.com/bitnami/charts/blob/931b597c43f6cd37919569acda4432a9bdd59a71/bitnami/postgresql/values.yaml#L298-L307

You can check the "Initialize a fresh instance" part of the README.md for more information.