Support for workspace specific tfvar file

[Kralizek]

Terraform Version

$ terraform version     
Terraform v1.5.7
on windows_amd64

Use Cases

I have an application that uses workspaces to deploy different environments. I want to have workspace-specific variable values to be used to differentiate each environment (e.g. auto scaling limit, instance type and so on).

Attempted Solutions

Right now we can either import a file passing its path as a argument of the CLI or create a map for each setting that has the workspace name as key.

Proposal

Ideally it would be files named like terraform.dev.tfvars and terraform.stage.tfvars.

To simplify filtering, a new extension could be introduced, like wstfvars so that's easier to select all those files who end with that extension and include the name of the current workspace.

References

No response

[jbardin]

Duplicate of #15966

[github-actions]

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