Change log for ARUBA_SWITCH

Date Changes
2024-10-16 Enhancement:
- Added support for new format of SYSLOG logs.
- Changed mapping of "userid" from "principal.user.userid" to "target.user.userid".
- Based on the log description, set "metadata.event_type" as "USER_LOGIN" or "USER_LOGOUT" or "NETWORK_CONNECTION".
- Based on the log description, set "security_result.action" as "ALLOW" or "BLOCK".
2024-09-17 Enhancement:
- Added support for a new pattern of SYSLOG logs.
2024-04-18 - Newly created parser.