[7.17](backport #36681) Enable compression by default for Elasticsearch outputs

[mergify]

This is an automatic backport of pull request #36681 done by Mergify.
Cherry-pick of 231e93a has failed:

On branch mergify/bp/7.17/pr-36681
Your branch is up to date with 'origin/7.17'.

You are currently cherry-picking commit 231e93a6d2.
  (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:   CHANGELOG.next.asciidoc
	modified:   auditbeat/auditbeat.reference.yml
	modified:   filebeat/filebeat.reference.yml
	modified:   heartbeat/heartbeat.reference.yml
	modified:   libbeat/_meta/config/output-elasticsearch.reference.yml.tmpl
	modified:   libbeat/outputs/elasticsearch/config.go
	modified:   libbeat/outputs/elasticsearch/docs/elasticsearch.asciidoc
	modified:   metricbeat/metricbeat.reference.yml
	modified:   packetbeat/packetbeat.reference.yml
	modified:   winlogbeat/winlogbeat.reference.yml
	modified:   x-pack/auditbeat/auditbeat.reference.yml
	modified:   x-pack/filebeat/filebeat.reference.yml
	modified:   x-pack/functionbeat/functionbeat.reference.yml
	modified:   x-pack/heartbeat/heartbeat.reference.yml
	modified:   x-pack/metricbeat/metricbeat.reference.yml
	modified:   x-pack/osquerybeat/osquerybeat.reference.yml
	modified:   x-pack/packetbeat/packetbeat.reference.yml
	modified:   x-pack/winlogbeat/winlogbeat.reference.yml

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   libbeat/outputs/elasticsearch/config_test.go

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

---

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

• Duration: 108 min 44 sec

❕ Flaky test report

No test was executed to be analysed.

🤖 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 and run the E2E tests.

• /beats-tester : Run the installation tests with beats-tester.

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

[mergify]

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

[jlind23]

We got all the performance testing results we were looking and thus are able to merge this.