Change log for FORTINET_FORTIANALYZER

Date Changes
2024-10-01 Enhancement:
- Mapped "logdesc" to "metadata.description".
2024-10-01 Enhancement:
- Mapped "logdesc" to "metadata.description".
2024-09-23 Enhancement:
- Modified mapping for "devname" to "principal.resource.attribute.labels".
- Mapped "srcname" to "principal.hostname" and "principal.asset.hostname".
2024-09-12 Enhancement:
- Added conditional checks to map the value "BLOCK" to the "security_result.action" UDM field when the "reason" value is "sslvpn_login_permission_denied".
2024-07-22 Enhancement:
- Added "gusb" to handle the unparsed logs.
2024-07-04 Enhancement:
- When "msg" contains "login", then set "event_type" to "USER_LOGIN".
2024-04-25 Enhancement:
- Mapped "httpmethod" to "network.http.method".
- When "action" is "login", then map "ALLOW" to "security_result.action".
- When "msg" contains "logged in successfully", then set "event_type" to "USER_LOGIN".
- When "msg" contains "login failed", then set "event_type" to "USER_LOGOUT".
2023-07-19 Bug-Fix:
- Added gsub to remove "\n" to parse failing logs.
2023-05-05 - Added support for logs with CEF format.
2022-09-19 Newly Created Parser