MM-23222 mirror audit logs to file (#14062)

* MM-23222 add file target (with rotation) to audit

* MM-23222 mirror syslog audits to local filesystem

    * provides config options for file name, max size, max age

    * rotates files based on max size and max age; delete as needed based on max backups

* include cluster id in log records

* sort meta data fields

audit/const.go

@@ -13,6 +13,7 @@ const (
 	KeySessionID = "session_id"
 	KeyClient    = "client"
 	KeyIPAddress = "ip_address"
+	KeyClusterID = "cluster_id"
 
 	Success = "success"
 	Attempt = "attempt"