Change log for AWS_ELB

Date Changes
2025-02-19 Enhancement:
- Added support for new format of syslog logs.
- Mapped "sec_status" to "security_result.action".
- Mapped "grp_identifiers" to "principal.user.group_identifiers".
- Mapped "http_version" to "network.application_protocol_version".
- Mapped "useragent" to "network.http.user_agent".
- Mapped "severity_level" to "security_result.severity".
- Mapped "pid" to "principal.process.pid".
- Mapped "port" to "principal.port".
- Mapped "desc" to "metadata.description".
- Mapped "int_host" to "intermediary.hostname".
- Mapped "int_port" to "intermediary.port".
- Mapped "tid" to "additional.fields".
- Added a Grok pattern to parse "sent_bytes".
2024-11-12 Enhancement:
- Added support to parse new format of syslog logs.
2024-03-22 Enhancement:
- Added new Grok pattern to support new pattern of JSON logs.
- Added support for CEF pattern logs.
- Mapped "dst_ip" to "target.ip".
- Mapped "dst_port" to "target.port".
- Mapped "sip" to "principal.ip".
- Mapped "request_processing_time", "target_processing_time", "siteid", "fileId", and "response_processing_time" to "security_result.detection.fields".
- Aligned mappings for "principal.ip" and "principal.asset.ip".
- Aligned mappings for "target.ip" and "target.asset.ip".
- Aligned mappings for "target.hostname" and "target.asset.hostname".
- Mapped "cipher" to "network.tls.cipher".
- Mapped "version" to "network.tls.version".
- Mapped "Customer" to "principal.user.user_display_name".
2022-05-27 Enhancement - Modified the value stored in metadata.product_name to 'AWS Elastic Load Balancer'.