Always record inputs passed through -I in the BuildInputs table

We currently have no way to determine if the Nix evaluator used a
specific -I input, so we need to record all of them as inputs.

src/script/hydra-evaluator

@@ -44,6 +44,7 @@ sub setJobsetError {
     sendJobsetErrorNotification($jobset, $errorMsg); 
 }
 
+
 sub sendJobsetErrorNotification() {
     my ($jobset, $errorMsg) = @_;