Moves the "e" directory into multiple subvolumes.
This decouples the setup further from the local environment where side
effects might appear when using BTRFS.
REVA_FRONTEND_URL and REVA_DATAGATEWAY_URL need to be set to the OCIS_DOMAIN so upload is not using localhost ;-)
cc @jnweiger
Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>
Vincent Petry