chore(secretmanager): Added samples for delayed destroy

[durgesh-ninave-crest]

Description

Added samples for kms_key field in regional parameter using Parameter manager SDK

Sample List (global & regional):

1. Create Secret With Delayed Destroy
2. Disable Secret Delayed Destroy
3. Update Secret With Delayed Destroy

Added required Tests for the same.

Checklist

• I have followed Sample Format Guide
• pom.xml parent set to latest shared-configuration
• Appropriate changes to README are included in PR
• 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)
• Tests pass: mvn clean verify required
• Lint passes: mvn -P lint checkstyle:check required
• Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners 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

[gemini-code-assist]

Summary of Changes

Hello @durgesh-ninave-crest, 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 introduces a set of new Java samples for Google Cloud Secret Manager, focusing on the 'delayed destroy' functionality for secret versions. It provides examples for creating, updating, and disabling this feature for both global and regional Secret Manager instances, along with robust integration tests to ensure proper operation.

Highlights

• New Secret Management Samples: I've added three new Java samples for Google Cloud Secret Manager: CreateSecretWithDelayedDestroy, DisableSecretDelayedDestroy, and UpdateSecretWithDelayedDestroy. These samples demonstrate how to manage secrets with a 'delayed destroy' feature, allowing for a specified time before a secret version is permanently destroyed.
• Regional API Support: Corresponding regional samples (CreateRegionalSecretWithDelayedDestroy, DisableRegionalSecretDelayedDestroy, UpdateRegionalSecretWithDelayedDestroy) have been introduced. These samples illustrate how to perform the same delayed destroy operations using regional Secret Manager endpoints, providing flexibility for geographically distributed applications.
• Comprehensive Testing: New integration tests have been included in SnippetsIT.java and regionalsamples/SnippetsIT.java to validate the functionality of all the new delayed destroy samples, ensuring their correctness and reliability.

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[gemini-code-assist]

Code Review

This pull request adds new samples for creating, updating, and disabling delayed destruction of secrets in Secret Manager, for both global and regional secrets. The changes include the sample code and corresponding integration tests. There is a critical bug in one of the new regional samples due to swapped method arguments. I've also suggested improvements for robustness by changing the type of versionDestroyTtl from Integer to long across all new samples to avoid potential NullPointerExceptions.

[YashSaraf11]

Please assert in the test scenarios that the delayed destory was disabled or updated. I do not see any assert statements on those tests for the operation verification.

[durgesh-ninave-crest]

Please assert in the test scenarios that the delayed destory was disabled or updated. I do not see any assert statements on those tests for the operation verification.

I've updated the assertion to reflect the intended functionality of the sample.