Change log for SYMANTEC_VIP

Date	Changes
2023-03-03	Enhancement- Mapped userid to target.user.userid for the logs that were not parsed already. - Mapped event_type to USER_LOGIN for the logs where userid is present else if principal.hostname is present then mapped event_type to STATUS_UPDATE, else mapped it to GENERIC_EVENT. - Parsed the logs that were dropped initially.
2022-08-03	BugFix - Added the grok pattern to handle the unparsed logs having log_type remove_credentials.