Change log for REDHAT_DIRECTORY_SERVER

Date Changes
2024-10-24 Enhancement
- Added a Grok pattern to parse new logs.
- Mapped "host" to "principal.hostname" and "principal.asset.hostname".
- Mapped "desc" to "metadata.description".
2024-10-07 Enhancement
- Added a Grok pattern to map "user" field to "principal.user.userid".
2024-06-25 Enhancement
- Mapped "properties.country" to "target.location.country_or_region"
- Mapped "properties.discipline" ,"properties.document_type" ,"properties.environment" ,"properties.hostgroup" ,"properties.platform" ,"properties.product" to "target.resource.attribute.labels"
2022-04-11 Enhancement-Added mappings for new fields
Mapped conn, op, err, tag, nentries, wtime, optime, etime, csn, properties._file_offset,filter,attrs,scope,op,o,targetop,msgid,method,version,fd,slot to about.labels.
Mapped creationDate and recordDate fields to attribute.creation_time and metadata.collected_timestamp respectively.