Cloud Deploy CustomTargetType remote Skaffold config support with Cloud Build repositories

[katiexzhang]

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Description

When defining custom targets for Cloud Deploy, Terraform should support using Cloud Build V2 Repositories as remote Skaffold configs.

New or Affected Resource(s)

• google_clouddeploy_custom_target_type

Potential Terraform Configuration

resource "google_clouddeploy_custom_target_type" "custom-target-type" {
    location = "us-central1"
    name = "tf-test-my-custom-target-type%{random_suffix}"
    description = "My custom target type"
    custom_actions {
      render_action = "renderAction"
      deploy_action = "deployAction"
      include_skaffold_modules {
        configs = ["my-config"]
        google_cloud_build_repo {
          repository = "projects/777/locations/us-central1/connections/git/repositories/repo"
          path = "configs/skaffold.yaml"
          ref = "main"
        }
      }
    }
}

References

https://cloud.google.com/deploy/docs/api/reference/rest/v1/projects.locations.customTargetTypes#skaffoldgcbreposource

b/337873627

[rileykarson]

Assigning based on linked PR