fix: updated the option for evaluation mode

[Daisyprakash]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @Daisyprakash, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines a configuration option related to evaluation modes within the GKE standard cluster module. The change involves renaming an existing policy binding option to a more descriptive project singleton policy enforcement, aiming to enhance clarity and consistency in how these evaluation modes are presented and utilized.

Highlights

• Evaluation Mode Option Update: The POLICY_BINDINGS evaluation mode option has been updated to PROJECT_SINGLETON_POLICY_ENFORCE within the GKE standard cluster metadata display configuration.

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[gemini-code-assist]

Code Review

This pull request correctly updates the evaluation_mode option for Binary Authorization from the deprecated POLICY_BINDINGS to the valid PROJECT_SINGLETON_POLICY_ENFORCE. This is a good fix that aligns the module with the current GKE API. I have one suggestion to improve the user-friendliness of the UI label. Additionally, I noticed that the binary_authorization feature is not covered by the integration tests. Consider adding a test case to improve test coverage and help prevent future regressions.

[gemini-code-assist]

The label PROJECT_SINGLETON_POLICY_ENFORCE is the raw API value and may not be intuitive for users in a UI. For better usability, consider using a more descriptive, human-readable label such as "Project Singleton Policy Enforcement".

                - label: "Project Singleton Policy Enforcement"
                  value: PROJECT_SINGLETON_POLICY_ENFORCE

[apeabody]

Thanks @Daisyprakash - PR already reviewed