fix: allow tofu/terraform caches to stay local

[JonZeolla]

Contributor Comments

This removes the .terraformrc and updates the related documentation. By pre-configuring a plugin cache in our images, we make it so that inits result in .terraform/providers/... directories which symlink to /home/easy_infra/.terraform.d/plugin-cache/... which not be what's intended by our users.

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[JonZeolla]

Whups

[ChiefHolland]

LGTM