[sentinel_one] Populate ECS field message for threat, alert and activity datastreams

[brijesh-elastic]

Proposed commit message

sentinel_one: populate ECS field message for threat, alert and activity datastreams

This will populate the correct alert title when 'External Alerts' rule is enabled.

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

How to test this PR locally

• Clone integrations repo.
• Install elastic package locally.
• Start elastic stack using elastic-package.
• Move to integrations/packages/sentinel_one directory.
• Run the following command to run tests.

elastic-package test

Related issues

• Closes [SentinelOne] Parse and Populate ECS message Field with Alert Titles #12564

[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

[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: ca54e7a

cc @brijesh-elastic

[ShourieG]

LGTM

[elastic-vault-github-plugin-prod]

Package sentinel_one - 1.34.0 containing this change is available at https://epr.elastic.co/package/sentinel_one/1.34.0/