Change log for CISCO_ESTREAMER

Date Changes
2024-06-21 Enhancement:
- Mapped "app" to "network.application_protocol".
2024-06-20 Enhancement:
- Mapped "request" to "network.http.referral_url".
- Mapped "fsize" to "target.file.size".
- Mapped "fileHash" to "target.file.sha256".
- Mapped "fileType" to "target.file.mime_type".
- Mapped "fname" to "target.file.full_path".
- Mapped "deviceExternalId" to "principal.asset.asset_id".
- If "deviceDirection" is equal to "1" then mapped "network.direction" to "OUTBOUND" and if "deviceDirection" is equal to "0" then mapped "network.direction" to "INBOUND".
- Mapped "app" to "network.application_protocol".
- Mapped "destinationDnsDomain" to "network.dns.questions.name".
- Mapped "outcome" to "security_result.summary".
- If "act" is equal to "Malware Block" then mapped "security_result.action" to "BLOCK".
2024-06-04 Bug-fix
- Updated Grok to parser unparsed logs.
2024-05-15 - Newly created parser.