Dylan Hartley to put brawling in the bin for front-row set-to with Wales

England captain says lack of discipline would be detrimental in live scrummaging session before first autumn international against ArgentinaHow fortunate it is the Barbarians, not England, opposing the All Blacks at Twickenham on Saturday. Injuries and unavailability would have limited both sides’ preparations and taken the edge off a fixture that does not absolutely have to happen now. This time next year, when black and white ambitions do finally collide, there will be no post-Lions tour hangover either.Instead England have spent the past week in the relative peace of Portugal, thinking most…