x-pack/winlogbeat/module/powershell: don't split tokens on hyphen

[efd6]

What does this PR do?

The change replaces the simple tokenizer with a custom tokenizer that splits on word boundaries that do not include hyphen.

Why is it important?

The current tokenizer splits powershell language tokens given incorrect search results.

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.

Author's Checklist

• Confirm that this generates the correct output template.

How to test this PR locally

Related issues

• Relates packages/windows/data_stream/powershell_operations: don't split tokens on hyphen integrations#1931

Use cases

N/A

Screenshots

N/A

Logs

N/A

[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

• Start Time: 2021-11-15T23:53:54.871+0000

• Duration: 58 min 34 sec

• Commit: 5997d97

Test stats 🧪

Test	Results
Failed	0
Passed	883
Skipped	0
Total	883

💚 Flaky test report

Tests succeeded.

🤖 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!)

[andrewkroh]

I opened an issue to discuss custom analyzer support in Beats at #28540.

[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 windows/powershell upstream/windows/powershell
git merge upstream/master
git push upstream windows/powershell

[elasticmachine]

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

[efd6]

Just a note. I duplicated the definition in the search analyzer although this is not required since the analyzers are collated during the fields walk. It is included for clarity — though I'm not sure it achieves that.