Change log for FORTINET_DHCP

Date Changes
2022-11-21 Enhancement:
- Mapped the field srcip to principal.ip.
- Mapped the field srcport to principal.port.
- Mapped the field srccountry to principal.location.country_or_region.
- Mapped the field interface to principal.hostname.
- Mapped the field user_name to principal.user.user_display_name.
- Mapped the field srcuuid to principal.user.product_object_id.
- Mapped the field host_name to intermediary.hostname.
- Mapped the field dstip to target.ip.
- Mapped the field dstport to target.port.
- Mapped the field dstcountry to target.location.country_or_region.
- Mapped the field application to target.application.
- Mapped the field dstuuid to target.user.product_object_id.
- Mapped the field url to target.url.
- Mapped the field profile to target.resource.name.
- Mapped the field sessionid to network.session_id.
- Mapped the field direction to network.direction.
- Mapped the field proto to network.ip_protocol.
- Mapped the field duration to network.session_duration.seconds.
- Mapped the field sentbyte to network.sent_bytes.
- Mapped the field rcvdbyte to network.received_bytes.
- Mapped the field level to security_result.severity_details.
- Mapped the field policyid to security_result.rule_id.
- Mapped the field policyname to security_result.rule_name.
- Mapped the field policytype to security_result.rule_type.
- Mapped the field catdesc to security_result.category_details.
- Mapped the field crlevel to security_result.severity.
- Mapped the field crscore to security_result.severity_details.
- Mapped the field srcintf, srcintfrole, dstintf, dstintfrole and craction to security_result.detection_fields.
- Mapped the field sentpkt, rcvdpkt and appcat to additional.fields.
- Mapped the field action to security_result.action and security_result.action_details.