x-pack/filebeat/module/cisco/asa: add handling of AAA operations and non-canonical log formats

[efd6]

What does this PR do?

This reflects changes in the cisco_asa package added in v2.7.0 and v2.7.1.

Why is it important?

It brings funtionality in to line with the integration and fixes a user issue.

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

• [ ]

How to test this PR locally

Related issues

• Closes Filebeat Cisco ASA module - add ECS authentication fields for SIEM #32257

Use cases

Screenshots

Logs

[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: 2022-08-24T22:36:14.480+0000

• Duration: 77 min 40 sec

Test stats 🧪

Test	Results
Failed	0
Passed	2202
Skipped	166
Total	2368

💚 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!)

[elasticmachine]

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

[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 32257-cisco_asa upstream/32257-cisco_asa
git merge upstream/main
git push upstream 32257-cisco_asa