[8.9](backport #3359) Structure the BK pipeline output for failures

[mergify]

This is an automatic backport of pull request #3359 done by Mergify.

---

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.com

[elasticmachine]

💚 Build Succeeded

the below badges are clickable and redirect to their specific view in the CI or DOCS

Expand to view the summary

Build stats

• Start Time: 2023-09-18T08:32:43.783+0000

• Duration: 27 min 36 sec

Test stats 🧪

Test	Results
Failed	0
Passed	6097
Skipped	27
Total	6124

💚 Flaky test report

Tests succeeded.

🤖 GitHub comments

Expand to view the GitHub comments

To re-run your PR in the CI, just comment with:

• /test : Re-trigger the build.

• /package : Generate the packages.

• run integration tests : Run the Elastic Agent Integration tests.

• run end-to-end tests : Generate the packages and run the E2E Tests.

• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	98.701% (76/77)	👍
Files	65.827% (183/278)	👍
Classes	64.865% (336/518)	👍
Methods	52.092% (1046/2008)	👍
Lines	37.927% (11974/31571)	👍
Conditionals	100.0% (0/0)	💚

[mergify]

This pull request has not been merged yet. Could you please review and merge it @alexsapran? 🙏