Add possibility to generate hcl files with terraform-docs

[lays147]

When using the terraform_docs hook I'm not able to generate the hcl file based on this setup:

repos:
    - repo: git://github.com/antonbabenko/pre-commit-terraform
      rev: v1.50.0 # Get the latest from: https://github.com/antonbabenko/pre-commit-terraform/releases
      hooks:
          - id: terraform_fmt
          - id: terraform_docs
          - id: terraform_docs
            args:
                [
                    "tfvars",
                    "hcl",
                    "--output-file",
                    "terraform.tfvars.model",
                    ".",
                ]
          - id: terraform_tflint
          - id: terraform_tfsec

➜  ecs-service-module git:(master) ✗ pre-commit run -a
Terraform fmt............................................................Passed
Terraform docs...........................................................Passed
Terraform docs...........................................................Failed
- hook id: terraform_docs
- exit code: 1

getopt: unrecognized option '--output-file'

Terraform validate with tflint...........................................Passed
Terraform validate with tfsec............................................Passed

Is it possible to add the possibility to generate the hcl, since apparently the command for terraform_tfdocs is directly connected with the markdown generation?

[MaxymVlasov]

Hi @lays147

Yes.

repos:
- repo: git://github.com/antonbabenko/pre-commit-terraform
  rev: v1.50.0
  hooks:
   - id: terraform_docs
     args:
       - tfvars hcl --output-file terraform.tfvars.model .

[MaxymVlasov]

Can be fixed together with #208
TBD: Add/clarify doc how to use arguments with terraform_docs