Fix return value for Vstorage.Auth/Mount
Fix return value for Vstorage.Auth/Mount

Signed-off-by: Anton Kurbatov <774b3fbbe45c82878ea0fa1a1aa72357b4ab0314@virtuozzo.com>

dmission/ploop-flexvol,dmission/ploop-flexvol,virtuozzo/ploop-flexvol,virtuozzo/ploop-flexvol