Add error.stack_trace to the default log formatter

[felixbarny]

Summary

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Closes #46211

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[felixbarny]

I hit an issue when testing this change: in the default mapping for error.stack_trace, the field is not indexed. See https://github.com/elastic/ecs/blob/fd9917931f87ac7243149190953ffdd5ea8bbf2a/schemas/error.yml#L39-L47

So we could either try using error.stack_trace.text or make the logs UI retrieve the fields from _source. I'll try the first option for now as it's easier to test.

[felixbarny]

With error.stack_trace.text, it's now working nicely 🙂

[elasticmachine]

Pinging @elastic/logs-metrics-ui (Team:logs-metrics-ui)

[Kerry350]

@felixbarny Thanks for this, it looks to work well 🎉

[felixbarny]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: cdbbd44
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Metrics [docs]

✅ unchanged

History

• 💚 Build #113992 succeeded 2ef2429
• 💚 Build #113947 succeeded 749e74f

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@elasticmachine merge upstream

[kibanamachine]

💚 Backport successful

✅ 7.x / #95544

This backport PR will be merged automatically after passing CI.