libcryfs/test/fuse/fstat

Cite from FUSE documentation on the fgetattr function:
    Currently this is only called after the create() method if that is implemented (see above).
    Later it may be called for invocations of fstat() too.
So we need to issue a create to get our fstat called.
Since fstat is currently only called after create, we can't call it directly.
So we can't test the returned values.