Change log for AWS_ELB

Date Changes
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'.