[8.x](backport #6045) [CI] BK Integration tests: Run non-sudo tests

[mergify]

What does this PR do?

• Adds non-sudo tests to the new Buildkite integration tests
• Enhances Kibana configuration in deployment.tf (thanks @pchila)
  Example non-sudo test run
  Full test run

Final test run (after I applied the proposed changes) failed. But the reason is known : TestDebLogIngestFleetManaged/Monitoring_logs_are_shipped failed. Raised a PR that fixes this test

Why is it important?

Checklist

• 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

Disruptive User Impact

How to test this PR locally

Related issues

Questions to ask yourself

• How are we going to support this in production?
• How are we going to measure its adoption?
• How are we going to debug this?
• What are the metrics I should take care of?
• ...

---

This is an automatic backport of pull request #6045 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of f64785c has failed:

On branch mergify/bp/8.x/pr-6045
Your branch is up to date with 'origin/8.x'.

You are currently cherry-picking commit f64785cdd4.
  (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:   .buildkite/scripts/steps/integration_tests_tf.sh
	deleted:    .buildkite/scripts/sudo-integration-tests.sh
	modified:   test_infra/ess/deployment.tf

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   .buildkite/bk.integration.pipeline.yml
	both modified:   .buildkite/scripts/buildkite-integration-tests.sh
	deleted by us:   .buildkite/scripts/integration-tests.ps1
	deleted by them: .buildkite/scripts/steps/integration_tests_tf_sudo.sh

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

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
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.x/pr-6045 upstream/mergify/bp/8.x/pr-6045
git merge upstream/8.x
git push upstream mergify/bp/8.x/pr-6045

[mergify]

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

[oakrizan]

resolved conflicts

[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube