[vectra_rux] Migrate Vectra RUX to GA

[cpascale43]

Integration GA checklist

All changes

• Change follows the contributing guidelines
• Supported versions of the monitoring target are documented
• Supported operating systems are documented (if applicable)
• Integration or System tests exist
• Documentation exists, to follow documentation updates
• Fields follow ECS and naming conventions
• At least a manual test with ES / Kibana / Agent has been performed.
• Required Kibana version set to:
• Dashboards exists
• Existing issues closed https://github.com/elastic/integrations/issues?q=is%3Aissue%20state%3Aopen%20label%3AIntegration%3A
• Agentless if can be supported

[elasticmachine]

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