[filebeat][fortinet] Use default add_locale for fortinet.firewall (backport #26524)

[mergify]

This is an automatic backport of pull request #26524 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.io/

[botelastic]

This pull request doesn't have a Team:<team> label.

[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

• Build Cause: Pull request #26659 opened

• Start Time: 2021-07-01T11:40:47.042+0000

• Duration: 124 min 48 sec

• Commit: 297f71f

Test stats 🧪

Test	Results
Failed	0
Passed	14091
Skipped	2326
Total	16417

Trends 🧪

💚 Flaky test report

Tests succeeded.

Expand to view the summary

Test stats 🧪

Test	Results
Failed	0
Passed	14091
Skipped	2326
Total	16417

[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/7.14/pr-26524 upstream/mergify/bp/7.14/pr-26524
git merge upstream/7.14
git push upstream mergify/bp/7.14/pr-26524

[marc-gr]

Duplicate from #26660