Created Terraform sample to enable Private Preview features

[davide-zanon]

Description

This pull request creates a method to enable users to use the alpha API for Compute Engine.

Checklist

Readiness

• Yes, merge this PR after it is approved
• No, don't merge this PR after it is approved

Style

• My sample follows the rules described for Terraform in the Effective Samples style guide
• My sample follows the other requirements and best practices in the Contributing
  guide

Testing

• I have performed tests described in the Contributing guide:

  • Tests pass: terraform apply
  • Lint pass: terraform fmt check

Intended location

• Yes, this sample will be (or already is) included on cloud.google.com
  Location(s): https://cloud.google.com/compute/docs/reference/rest/alpha

• No, this sample won't be included on cloud.google.com
  Reason:

API enablement

• If the sample needs an API enabled to pass testing, I have added the service to the Test setup file

Review

• If this sample adds a new directory, I have added codeowners to the CODEOWNERS file

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• compute/preview_feature/enable/main.tf:17, tag compute_preview_feature_enable

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[hp1100]

LGTM. nit: maybe add https://cloud.google.com/compute/docs/reference/rest/alpha#allow-policy in comments to remind customer to allow enable preview feature

[davide-zanon]

LGTM. nit: maybe add https://cloud.google.com/compute/docs/reference/rest/alpha#allow-policy in comments to remind customer to allow enable preview feature

Thanks, Huici! This change is to display the Terraform code samples only. Any other text that we add before or after the code sample is handled within the documentation. See an example: https://cloud.google.com/compute/docs/instances/reservations-single-project#specify-vm-properties

[glasnt]

/gcbrun

[glasnt]

There is an organisation policy preventing the CI project from enabling preview features. Does this code work in a project without this restriction?

We can accept this code by disabling tests, if required.

[davide-zanon]

There is an organisation policy preventing the CI project from enabling preview features. Does this code work in a project without this restriction?

We can accept this code by disabling tests, if required.

That's required by the feature. See https://cloud.google.com/compute/docs/reference/rest/alpha#allow-policy.

And, yes, if we could disable tests, that would be great. Many thanks!

[glasnt]

/gcbrun go brr