[citrix_adc] - Parse dates more comprehensively

[jrmolin]

Proposed commit message

[citrix_adc] Parsing and formatting date/time strings caused failures

• Some grok patterns were returning date/time strings with trailing spaces
• Trailing spaces were breaking the date processing
• The custom date format parser also didn't properly handle trailing spaces
• A comprehensive upgrade to the custom format parsing was needed to ensure accuracy and consistency
• Sample data was added to the pipeline tests to verify the fix

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.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

• [ ]

How to test this PR locally

cd packages/citrix_adc
elastic-package build && elastic-package test

Related issues

Screenshots

[jrmolin]

uh, what?

[jrmolin]

what is causing this!?!?!?!?!?

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

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[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 5c6f464

History

• 💚 Build #17783 succeeded 75b6b17
• 💔 Build #17770 failed 0abaeb7
• 💔 Build #17747 failed 6d6eca6