Dallas Cowboys running back Ezekiel Elliott is facing a six-game suspension for violating the NFL’s Personal Conduct Policy. The NFL star and his legal team appealed the suspension on Aug. 29, but Elliott’s lawyers did not wait for a judgment from the arbitrator before filing a lawsuit against the NFL in federal court on Friday.The decision made by arbitrator Harold Henderson in the appeal will decide if Elliott’s punishment is upheld or vacated. But the petition filed by Elliott’s team will seek …