Add New External DNS Metrics: controller.consecutive.soft.errors & controller.last_reconcile

[ddog-nasirthomas]

What does this PR do?

Adds two new metrics controller.consecutive.soft.errors & controller.last_reconcile

Verified the metrics with this documentation: https://kubernetes-sigs.github.io/external-dns/latest/docs/monitoring/metrics/#supported-metrics

Motivation

Customer FR
https://datadoghq.atlassian.net/browse/FRAGENT-3558
https://datadoghq.atlassian.net/browse/FRAGENT-3559

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.02%. Comparing base (57b7286) to head (2405a17).
⚠️ Report is 11 commits behind head on master.

Additional details and impacted files

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
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[datadog-prod-us1-3]

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 89.29%

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 2405a17 | Docs | Datadog PR Page | Give us feedback!}

[dd-octo-sts]

Validation Report

All 20 validations passed.

Show details

Validation	Description	Status
agent-reqs	Verify check versions match the Agent requirements file	✅
ci	Validate CI configuration and Codecov settings	✅
codeowners	Validate every integration has a CODEOWNERS entry	✅
config	Validate default configuration files against spec.yaml	✅
dep	Verify dependency pins are consistent and Agent-compatible	✅
http	Validate integrations use the HTTP wrapper correctly	✅
imports	Validate check imports do not use deprecated modules	✅
integration-style	Validate check code style conventions	✅
jmx-metrics	Validate JMX metrics definition files and config	✅
labeler	Validate PR labeler config matches integration directories	✅
legacy-signature	Validate no integration uses the legacy Agent check signature	✅
license-headers	Validate Python files have proper license headers	✅
licenses	Validate third-party license attribution list	✅
metadata	Validate metadata.csv metric definitions	✅
models	Validate configuration data models match spec.yaml	✅
openmetrics	Validate OpenMetrics integrations disable the metric limit	✅
package	Validate Python package metadata and naming	✅
readmes	Validate README files have required sections	✅
saved-views	Validate saved view JSON file structure and fields	✅
version	Validate version consistency between package and changelog	✅

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[ddog-nasirthomas]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Bravo.

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 2405a17293

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Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

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[chatgpt-codex-connector]

End the changelog fragment with a period

The root AGENTS.md changelog instructions require each entry to be a single line that ends with a period. This new fragment currently lacks the trailing period, so it violates the repository's documented changelog format for shipped Agent changes.

Useful? React with 👍 / 👎.