ci(run): restrict ingress for e2e deployments

[glasnt]

Description

Fixes #

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Checklist

• I have followed guidelines from CONTRIBUTING.MD and Samples Style Guide
• Tests pass: npm test (see Testing)
• Lint pass: npm run lint (see Style)
• Required CI tests pass (see CI testing)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This pull request is from a branch created directly off of GoogleCloudPlatform/nodejs-docs-samples. Not a fork.
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new sample directory, and I created GitHub Actions workflow for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

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[gemini-code-assist]

Summary of Changes

Hello, 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 enhances the security posture of end-to-end tests within the CI pipeline by ensuring that deployed services are only accessible from within the internal network. This change prevents external access to test deployments, aligning with best practices for secure testing environments.

Highlights

• E2E Deployment Ingress Restriction: Restricted network ingress for end-to-end (e2e) deployments of the helloworld service in the CI pipeline by adding the --ingress internal flag to the gcloud run deploy command.

Changelog

• run/helloworld/test/e2e_test_setup.yaml
  • Added --ingress internal flag to the gcloud run deploy command.

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[gemini-code-assist]

Code Review

This pull request modifies the end-to-end test setup by adding the --ingress internal flag to the gcloud run deploy command in e2e_test_setup.yaml. This change restricts network access to the deployed Cloud Run service to internal traffic only, which can enhance the security of the testing environment. The modification is confined to the CI configuration and appears correct.