adding sssd ldap_provider() to optionally ad or ipa to use ldap

[danlavu]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @danlavu, 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 SSSD test framework by adding a dedicated method to configure SSSD for LDAP provider usage, expanding its testing capabilities beyond existing IPA and Active Directory setups. Concurrently, it refines the codebase with several minor but impactful style improvements, such as modernizing Python's tuple unpacking and streamlining multiline string definitions, contributing to overall code clarity and maintainability.

Highlights

• New SSSD LDAP Provider Configuration: A new ldap_provider method has been introduced in the SSSD utility, allowing for flexible configuration of SSSD to use an LDAP backend for identity and authentication management, including support for sub-ID ranges.
• Python Syntax Modernization: Tuple unpacking syntax has been updated across multiple files, changing (a, b) = c to a, b = c for improved readability and adherence to modern Python style.
• Multiline String Formatting Refinement: Multiline string command executions and configurations have been refactored to remove redundant parentheses, making the code cleaner and more concise.

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[gemini-code-assist]

Code Review

This pull request introduces a new ldap_provider method for SSSD configuration and includes numerous stylistic cleanups across the codebase, such as removing unnecessary parentheses and standardizing multiline string formats. My review focuses on the new functionality and a related area with an existing issue. I've identified an opportunity to improve the efficiency of the new ldap_provider method by reducing redundant operations. Additionally, I've found a potential bug in the policy method in ad.py where configuration could be unintentionally overwritten. The suggested changes aim to fix this bug and enhance the code's robustness and performance.

[danlavu]

Tox is throwing some syntax errors, too many files are touched so I split up the PRs into two.

The tox fixes are in #229. After this is merged, tox will be green.