Add an option in configs to avoid storage of integration errors

[alecandido]

At the moment there is no way to ignore errors from the computation, but since they are a factor 2 in size, and usually we just ignore them, we should an option in OperatorCard.Configs to immediately avoid their storage (their absence is always taken into account by the code, but it is just impossible to trigger).

I propose to have a default value.

Which is going to be the default value (keep or drop) is debatable (I'm in favor of dropping, but it would be "breaking").