Add support for diff overrides in handle_updates; fix updating default_firewall_ids when None

[lgarber-akamai]

📝 Description

This pull request introduces a new diff_overrides field on the handle_updates helper, which allows modules to override the default diffing logic for fields that may require custom diff logic.

Integration tests run: https://github.com/linode/ansible_linode/actions/runs/19909274376/job/57073583771

✔️ How to Test

The following test steps assume you have pulled down this PR locally and run make install.

Integration Testing

NOTE: This test was previously failing only when the user has a null entry in the default_firewall_ids field.

make test-int TEST_ARGS="-v firewall_settings"

[Copilot]

Pull request overview

This PR adds support for custom diffing logic in the handle_updates helper function and fixes an issue with updating default_firewall_ids when it contains None values.

Key changes:

• Introduces a diff_overrides parameter to handle_updates allowing modules to provide custom comparison logic for specific fields
• Updates firewall settings module to use custom diff logic that preserves None values in default_firewall_ids
• Adjusts integration test to properly handle null values in firewall settings

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
plugins/module_utils/linode_helper.py	Refactored handle_updates to support custom diff functions via diff_overrides parameter
plugins/modules/firewall_settings.py	Added custom diff override for default_firewall_ids field using matching_keys_eq
tests/integration/targets/firewall_settings/tasks/main.yaml	Updated test to handle null values in default_firewall_ids field

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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[yec-akamai]

Tests passed on my end with null values, nice work!