oem: add oem config for gce
oem: add oem config for gce

ajeddeloh/ignition,coreos/ignition,dgonyeo/ignition,dgonyeo/ignition,higebu/ignition,ajeddeloh/ignition,coreos/ignition,coreos/ignition,dgonyeo/ignition,AlexNPavel/ignition,ajeddeloh/ignition,AlexNPavel/ignition,higebu/ignition,AlexNPavel/ignition,higebu/ignition