[8.1](backport #2407) Add metadata tags

[mergify]

This is an automatic backport of pull request #2407 done by Mergify.

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[elasticmachine]

💚 Build Succeeded

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• Start Time: 2022-04-25T09:01:15.028+0000

• Duration: 73 min 54 sec

Test stats 🧪

Test	Results
Failed	0
Passed	311
Skipped	0
Total	311

💚 Flaky test report

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• /test : Re-trigger the build.

[mergify]

This pull request is now in conflict. Could you fix it @mergify[bot]? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b mergify/bp/8.1/pr-2407 upstream/mergify/bp/8.1/pr-2407
git merge upstream/8.1
git push upstream mergify/bp/8.1/pr-2407

[elasticmachine]

💚 Build Succeeded

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

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• Start Time: 2022-04-26T10:14:49.518+0000

• Duration: 65 min 22 sec

Test stats 🧪

Test	Results
Failed	0
Passed	311
Skipped	0
Total	311

💚 Flaky test report

Tests succeeded.

🤖 GitHub comments

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

• /test : Re-trigger the build.