[opentelemetry] Create Plugin for Audit-Logs

[timojohlo]

Context

Besides customer-logs and operational logs, we agreed on creating a separate Greenhouse Plugin for shipping audit-logs (based on OpenTelemetry) in order to maintain security, ensure compliance, and improving system management/maintainability. This ticket should track the progress for the first version of a audit-logging plugin.

Acceptance Criteria

• Define what kind of logs are required for audit-logging (also check what we already have available in Greenhouse)
• Define standards for our landscape (align with colleagues e.g. here)
• Define architecture: e.g. same as the OpenTelemetry plugin with operator and collectors on each node?
• Define necessary receivers, processors and exporters
• Build first version of Plugin including PluginDefinition with custom fields

References