feat!: add Terraform 0.13 constraint and module attribution

[cloud-foundation-bot]

This PR was auto generated, please review for accuracy before merging

[comment-bot-dev]

Thanks for the PR! 🚀
Unfortunately it looks like some of our CI checks failed. See the Contributing Guide for details.

• ⚠️check_documentation
  The documentation needs to be regenerated. Please run make generate_docs.

Checking for documentation generation
diff -r '--exclude=.terraform' '--exclude=.kitchen' '--exclude=.git' '--exclude=autogen' '--exclude=*.tfvars' /workspace/examples/slo-generator/simple_example/README.md /tmp/tmp.92vBzSuO1g/generate_docs/workspace/examples/slo-generator/simple_example/README.md
22a23
> | bq\_location | Location of BQ dataset | `string` | `"US"` | no |
24c25
< | project\_id | Project id | `string` | n/a | yes |
---
> | project\_id | Project id | `any` | n/a | yes |
diff -r '--exclude=.terraform' '--exclude=.kitchen' '--exclude=.git' '--exclude=autogen' '--exclude=*.tfvars' /workspace/examples/slo-generator/yaml_example/README.md /tmp/tmp.92vBzSuO1g/generate_docs/workspace/examples/slo-generator/yaml_example/README.md
22a23
> | bucket\_location | Bucket name for SLO configs and GCF code zips | `string` | `"US"` | no |
25c26
< | project\_id | Project id | `string` | n/a | yes |
---
> | project\_id | Project id | `any` | n/a | yes |
Error: Documentation generation has not been run, please run the
'make docker_generate_docs' command and commit the above changes.

[bharathkkb]

LGTM
/cc @ocervell

[github-actions]

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