refactor: use k8s-override patch

Description

Use k8s-override over extending Tutor with any configuration.

Supporting information

https://github.com/overhangio/tutor/pull/677#issuecomment-1173912135

Testing instructions

Steps to test the changes:

1. See the instructions of tutor-contrib-grove!5 (merged)

Dependencies

1. tutor-contrib-grove!5 (merged)

Screenshots

N/A

Checklist

If any of the items below is not applicable, do not remove them, but put a check in it.

• All providers include the new feature/change
• All affected providers can provision new clusters
• Unit tests are added/updated
• Documentation is added/updated
• The TOOLS_CONTAINER_IMAGE_VERSION in ci_vars.yml is updated
• The grove-template repository is updated

Additional context

N/A