feat(compute): create sample for Disk Async Replication feature

[ujjwalranjan1]

Description

Fixes #

Note: If you are not associated with Google, open an issue for discussion before submitting a pull request.

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):

• 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 4 region tags.

• compute/disk_async_replication/main.tf:17, tag compute_disk_async_replication_parent_tag
• compute/disk_async_replication/main.tf:18, tag compute_disk_primary
• compute/disk_async_replication/main.tf:28, tag compute_disk_secondary
• compute/disk_async_replication/main.tf:43, tag compute_disk_async_replication

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[msampathkumar]

LGTM. Nice work. Please wait for the CICD to pass before merging!

[msampathkumar]

/gcbrun

[glasnt]

/gcbrun

[glasnt]

Sample is correct and tests successfully, unrelated error in CI ( #778 )