Default Location Impacted by Updates
/etc/emulationstation/es_systems.cfg
They recommend we make a copy of this file and place into
/opt/retropie/configs/all/emulationstation/es_systems.cfg
This override file will get picked up and has the advantage of being exposed on the samba share here
\\centipede\configs\all\emulationstation\es_systems.cfg
The downside is updates to the default location will not be auto merged to the override location.