Ruan Ackermann targets European Challenge Cup victory with Gloucester

• ‘We will have to be at our best’ against Newcastle, says flanker• Gloucester sixth in Premiership as season reaches its finaleThe European Challenge Cup has in recent years been Gloucester’s consolation ticket after Premiership campaigns that flickered and died, but they go into Friday night’s semi-final against Newcastle at Kingsholm for once fighting on two fronts at the tail-end of the season.Gloucester are sixth in the Premiership, three points behind Newcastle who occupy the final play-off position, and close to qualifying for next season’s Champions Cup, something they would achieve by…