refactor(iam): Adding new iam_policytroublershooter region tag - Migration process 2/2 for troubleshooter_java_dependency

[Kef131]

Description

Fixes b/385748009

This PR is the Second part of the two PR process to rename the previous region tag, so it doesn't break the current devsite documentation. (Add new region tag -> Update devsite documentation -> New PR deleting old region tag)

The troubleshooter_java_dependency region tag belongs to the primary product of Policy Troubleshooter (part of Policy Intelligence).

The main reference to this region tag appears on the Google Cloud documentation at https://docs.cloud.google.com/policy-intelligence/docs/reference/libraries. It is documented under the Policy Troubleshooter API, which in all of the REST reference includes the .iam reference. Furthermore, in the google-cloud-java repository, it references the Policy Troubleshooter API to the IAM product (https://github.com/googleapis/google-cloud-java/tree/main/java-policy-troubleshooter) using the same dependency referenced on the main and first Google doc here.

Based on this, and considering the closest relation and use with IAM, the new prefix and name will be as follow

Region Tag Update

• Old Region Tag: troubleshooter_java_dependency
• New Region Tag: iam_policytroubleshooter_java_dependency

This includes the IAM product and adds the complete reference of the library on the region tag.

Impacted Documentation & References

1. Google Cloud Documentation: * Policy Intelligence Libraries
   • Policy Troubleshooter API (REST Reference under the .iam namespace)
2. GitHub Repository: * iam/api-client/pom.xml

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]

Code Review

This pull request removes redundant start and end comment tags for troubleshooter_java_dependency in the pom.xml file of the iam/api-client module. As there are no review comments provided, I have no additional feedback to offer.