Test fails if CapacityBytes is always 0 #94
Description
According to the CreateVolume specs a volume should not set CapacityBytes (or set it to 0) to indicate that the capacity is unknown.
// The capacity of the volume in bytes. This field is OPTIONAL. If not
// set (value of 0), it indicates that the capacity of the volume is
// unknown (e.g., NFS share).
// The value of this field MUST NOT be negative.
int64 capacity_bytes = 1;
When running the test CreateVolume [Controller Server] [It] should fail when requesting to create a volume with already exisiting name and different capacity. it fails as it is not possible to detect this if the volume capacity is always 0.
The test CreateVolume [Controller Server] [It] should not fail when requesting to create a volume with already exisiting name and same capacity. also fails but as far as I can see this can be fixed by setting TestVolumeSize: 0.