Mike GreenawayThe Sharks’ victory in the Challenge Cup final has confirmed that the dark days are over for their supporters and there will be a brave new dawn in the next United Rugby Championship.Eben Etzebeth, the triumphant captain in the 36-22 defeat of Gloucester, has given some background to what he calls “the dark days” when the Sharks suffered a series of demoralising defeats.https://x.com/SharksRugby/status/1794791538066907551He said a period of uncertainty was inevitable given the changes in coaching staff ahead of this last season. It was a case of the assistant coaches…