Changelog
- 89dc6ea versionCheck: add Zabbix server version detector
- f197610 server: add background retention for /logs to prevent DB bloat
- daae755 versionCheck: add Postal version detector and wire into flow
- 3a122a7 versionCheck: add HAProxy version detector and wire into flow
- eafe624 versionCheck: add RabbitMQ version detector and normalize stored version
- 26cfeee versionCheck: add Nginx version detector and wire into flow