Change log for ORDR_IOT

Date Changes
2024-03-05 Enhancement-
- Mapped "timestamp" to "metadata.event_timestamp".
- Mapped "protocol" to "network.ip_protocol".
- Mapped "reference" to "additional.fields".
2022-08-19 Enhancement- - Mapped "deviceName" to event.idm.read_only_udm.principal.hostname.
- Modified grok to handle unparsed logs of type "auditTrail".
- Reduced Generic percentage by mapping to "event.idm.read_only_udm.metadata.event_type" to "STATUS_UPDATE" where applicable.
2022-04-13 Enhancement-Added mappings for new fields:
- clientId mapped to event.idm.read_only_udm.principal.mac.
- alarmHash mapped to event.idm.read_only_udm.additional.fields.
- connectionState mapped to event.idm.read_only_udm.additional.fields.
Increased parsing percentage.