Change log for CLOUDGENIX_SDWAN

Date Changes

2022-09-08 Enhancement-
- Added conditional check for PROTOCOL_NAME.
- Added conditional check for MSG if it is similar failure,fail,invalid user,closed,closing set event_type to STATUS_SHUTDOWN.
- Set event_type to NETWORK_FLOW when principal.ip and target.ip not null.
- Set event_type to STATUS_STARTUP when MSG similar to initiating,establishing,establishing,check pass.
- Set event_type to STATUS_UNCATEGORIZED when MSG similar to no such user.
- Added grok pattern for MSG to retrieve dest_ip and Mapped it to target.ip.
- Added grok pattern for the new logs to retrieve ION_HOST.
- Mapped ION_HOST to principal.hostname.

Date	Changes
2022-09-08	Enhancement- - Added conditional check for `PROTOCOL_NAME`. - Added conditional check for `MSG` if it is similar `failure,fail,invalid user,closed,closing` set event_type to `STATUS_SHUTDOWN`. - Set event_type to `NETWORK_FLOW` when `principal.ip` and `target.ip` not null. - Set event_type to `STATUS_STARTUP` when `MSG` similar to `initiating,establishing,establishing,check pass`. - Set event_type to `STATUS_UNCATEGORIZED` when `MSG` similar to `no such user`. - Added grok pattern for `MSG` to retrieve `dest_ip` and Mapped it to `target.ip`. - Added grok pattern for the new logs to retrieve `ION_HOST`. - Mapped `ION_HOST` to `principal.hostname`.