[9.1] (backport #10851) Allow different beats versions in integration tests

[mergify]

What does this PR do?

Makes tests which compare data emitted by beats processes and beats receivers to ignore differences in the agent version.

Why is it important?

These values can be different when the version has been bumped in beats, but the respective commit hasn't been pulled in as a dependency. We shouldn't block CI in that case.

Checklist

• I have read and understood the pull request guidelines of this project.
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have made corresponding change to the default configuration files
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added an entry in ./changelog/fragments using the changelog tool
• [ ] I have added an integration test or an E2E test

---

This is an automatic backport of pull request #10851 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 89c9b27 has failed:

On branch mergify/bp/9.1/pr-10851
Your branch is up to date with 'origin/9.1'.

You are currently cherry-picking commit 89c9b279d.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   testing/integration/ess/beat_receivers_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   testing/integration/ess/otel_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[elasticmachine]

Pinging @elastic/elastic-agent-control-plane (Team:Elastic-Agent-Control-Plane)

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: d81d8af

History

• 💔 Build #29465 failed 0d84bd1
• 💔 Build #29463 failed 1f3023f

cc @swiatekm