Better access log formatting #1
Description
Stack traces ought to go into error.stack_trace, access log records should be flagged as such with event.type: 'access'
https://www.elastic.co/guide/en/ecs/current/ecs-error.html#field-error-stack-trace
https://www.elastic.co/guide/en/ecs/current/ecs-allowed-values-event-type.html#ecs-event-type-access