tandoor: allow usage with sqlite

[christf]

Chart Name

tandoor

Is your feature request related to a problem? Please describe.

Tandoor allows usage with sqlite if and only if an sqlite database is on a volume as described on https://github.com/TandoorRecipes/recipes/issues/155.

Describe the solution you'd like

It would be nice if the chart would create the necessary volumes to support sqlite3 usage

Describe alternatives you've considered

No response

Additional context

No response

[christf]

As a workaround, this is what I did:

• set values.postgresql.enabled: false
• set env.POSTGRES_DB: /mnt/db/sqlite3.db
• add another volume to be mounted at /mnt/db

A better solution would be to automatically attach an additional volume, if postgresql is disabled and place the sqlite db on it.