chore: Migrate gsutil usage to gcloud storage

[gurusai-voleti]

Automated: Migrate {target_path} from gsutil to gcloud storage

This CL is part of the on going effort to migrate from the legacy gsutil tool to the new and improved gcloud storage command-line interface.
gcloud storage is the recommended and modern tool for interacting with Google Cloud Storage, offering better performance, unified authentication, and a more consistent command structure with other gcloud components. 🚀

Automation Details

This change was generated automatically by an agent that targets users of gsutil.
The transformations applied are based on the gsutil to gcloud storage migration guide.

⚠️ Action Required: Please Review and Test Carefully

While we have based the automation on the migration guide, every use case is unique.
It is crucial that you thoroughly test these changes in environments appropriate to your use-case before merging.
Be aware of potential differences between gsutil and gcloud storage that could impact your workflows.
For instance, the structure of command output may have changed, requiring updates to any scripts that parse it. Similarly, command behavior can differ subtly; the gcloud storage rsync command has a different file deletion logic than gsutil rsync, which could lead to unintended file deletions.

Our migration guides can help guide you through a list of mappings and some notable differences between the two tools.

Standard presubmit tests are run as part of this CL's workflow. If you need to target an additional test workflow or require assistance with testing, please let us know.

Please verify that all your Cloud Storage operations continue to work as expected to avoid any potential disruptions in production.

Support and Collaboration

The GCS CLI team is here to help! If you encounter any issues, have a complex use case that this automated change doesn't cover, or face any other blockers, please don't hesitate to reach out.
We are happy to work with you to test and adjust these changes as needed.

Contact: [email protected]

We appreciate your partnership in this important migration effort!

#gsutil-migration

[gemini-code-assist]

Summary of Changes

Hello @gurusai-voleti, 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 updates the usage of Google Cloud Storage command-line tools from the legacy gsutil to the recommended gcloud storage. This change aims to leverage the benefits of gcloud storage, such as better performance and unified authentication, and is part of a broader modernization effort. While automated, it emphasizes the need for thorough review and testing due to potential behavioral differences between the two tools.

Highlights

• Migration to gcloud storage: This pull request migrates existing gsutil commands to the modern gcloud storage command-line interface for interacting with Google Cloud Storage. This is part of an ongoing effort to standardize and improve GCS CLI usage.
• Automated Change: The changes were automatically generated by an agent targeting gsutil users, based on the official gsutil to gcloud storage migration guide.
• Updated Kokoro Script: Specifically, gsutil cp commands within the .kokoro/trampoline_v2.sh script have been updated to gcloud storage cp for downloading resources from Google Cloud Storage.

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[gemini-code-assist]

Code Review

This pull request contains an automated migration from gsutil to gcloud storage. The change updates commented-out example commands in a shell script to use gcloud storage cp instead of gsutil cp. The modification is correct and aligns with the stated goal of the pull request. The changes are approved as is.