[Filebeat] GA checkpoint module

[leehinman]

What does this PR do?

GA checkpoint module

• release to ga
• remove beta from docs

Why is it important?

sync with integration

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.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Related issues

• Relates GA Security Integrations integrations#1562

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2021-09-20T17:37:18.961+0000

• Duration: 91 min 49 sec

• Commit: 9b14b82

Test stats 🧪

Test	Results
Failed	0
Passed	15300
Skipped	2317
Total	17617

Trends 🧪

💚 Flaky test report

Tests succeeded.

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Test stats 🧪

Test	Results
Failed	0
Passed	15300
Skipped	2317
Total	17617

[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 ga_checkpoint upstream/ga_checkpoint
git merge upstream/master
git push upstream ga_checkpoint

[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 ga_checkpoint upstream/ga_checkpoint
git merge upstream/master
git push upstream ga_checkpoint

[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 ga_checkpoint upstream/ga_checkpoint
git merge upstream/master
git push upstream ga_checkpoint