d80420bca8
if the fuse tool encounters an error early, it prints it like: Error: some error message on stderr. Redirect STDERR of the child process (which mounts the ESXi instance) to the pipe of the parent (API) process, so that it can pass a hopefully more meaningful message to the user than just an erroneous return code. Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>