barracuda.waf: Improve access logs parsing

[kcreddy]

Proposed commit message

See title

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

How to test this PR locally

By running package's pipeline tests:
$ cd packages/barracuda && elastic-package build && elastic-package stack up --version=8.13.0 -d -v && eval "$(elastic-package stack shellinit)" && elastic-package test pipeline --generate -v
Results:

--- Test results for package: barracuda - START ---
╭───────────┬─────────────┬───────────┬──────────────────────────────────────────────────────┬────────┬──────────────╮
│ PACKAGE   │ DATA STREAM │ TEST TYPE │ TEST NAME                                            │ RESULT │ TIME ELAPSED │
├───────────┼─────────────┼───────────┼──────────────────────────────────────────────────────┼────────┼──────────────┤
│ barracuda │ waf         │ pipeline  │ (ingest pipeline warnings test-access.log)           │ PASS   │    562.554ms │
│ barracuda │ waf         │ pipeline  │ (ingest pipeline warnings test-audit.log)            │ PASS   │ 522.431959ms │
│ barracuda │ waf         │ pipeline  │ (ingest pipeline warnings test-network-firewall.log) │ PASS   │ 541.532583ms │
│ barracuda │ waf         │ pipeline  │ (ingest pipeline warnings test-system.log)           │ PASS   │ 570.000959ms │
│ barracuda │ waf         │ pipeline  │ (ingest pipeline warnings test-web-firewall.log)     │ PASS   │ 462.074833ms │
│ barracuda │ waf         │ pipeline  │ test-access.log                                      │ PASS   │ 709.170458ms │
│ barracuda │ waf         │ pipeline  │ test-audit.log                                       │ PASS   │     47.437ms │
│ barracuda │ waf         │ pipeline  │ test-network-firewall.log                            │ PASS   │ 102.175042ms │
│ barracuda │ waf         │ pipeline  │ test-system.log                                      │ PASS   │   58.67625ms │
│ barracuda │ waf         │ pipeline  │ test-web-firewall.log                                │ PASS   │ 163.863958ms │
╰───────────┴─────────────┴───────────┴──────────────────────────────────────────────────────┴────────┴──────────────╯
--- Test results for package: barracuda - END   ---
Done

[elasticmachine]

Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 1bb6662

History

• 💚 Build #16842 succeeded be729a2
• 💔 Build #16825 failed fa5181b
• 💔 Build #16824 failed a42e872
• 💔 Build #16823 failed 272f0db

cc @kcreddy

[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
85.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube

[elastic-vault-github-plugin-prod]

Package barracuda - 1.16.0 containing this change is available at https://epr.elastic.co/search?package=barracuda