Property set the Port.log_file property.
Property set the Port.log_file property.

log_file depends on the port's attribute map being loaded (which is on port
initialisation).  If the port's attribute map gets reloaded then log_file may
have changed.

The previous log was a leftover of the previous Port model where the port's
attribute map was loadable after class creation.

DragonSA/portbuilder,DragonSA/portbuilder