Storing the tfstate files in Git

[keyvaann]

What would be the best practice to store the .tfstate and .tfvars in Git? Should there be a private fork or a parent repository or something else?

### Tasks
- [ ] https://github.com/RADAR-base/RADAR-K8s-Infrastructure/pull/23

[baixiac]

We've used the TF S3 backend on our fork and it works fine for managing tfstate. Plus it provides a locking mechanism to prevent concurrent updates to tfstate by multiple users.

[keyvaann]

Is it possible to add the code for backend configuration to this repository as well?