storage: write the files in config.Filesystem
storage: write the files in config.Filesystem

Mounts the newly initialized filesystem at a temporary place and writes the
files before unmounting.

marineam/ignition,coreos/ignition,crawford/ignition,ajeddeloh/ignition,dgonyeo/ignition,jonboulle/ignition,trnubo/ignition,higebu/ignition,crawford/ignition,mischief/ignition,higebu/ignition,ajeddeloh/ignition,AlexNPavel/ignition,dgonyeo/ignition,AlexNPavel/ignition,mischief/ignition,marineam/ignition,dgonyeo/ignition,jonboulle/ignition,mischief/ignition,coreos/ignition,trnubo/ignition,trnubo/ignition,AlexNPavel/ignition,marineam/ignition,higebu/ignition,jonboulle/ignition,coreos/ignition,ajeddeloh/ignition