RIDEAU HALL—Prime Minister Justin Trudeau on Monday unveiled a few minor changes to his front bench, creating a new cabinet post to oversee the concerns of rural voters and appointing a new face to manage the government’s relations with Indigenous communities. Indigenous Services Minister Jane Philpott (Markham-Stouffville, Ont.) was shuffled to replace Scott Brison (Kings-Hants, N.S.), whose resignation from the Treasury Board last week triggered the ministerial changes. In choosing her to take over the Treasury Board, Mr.