Sam Montembeault stopped 30 shots as the Montreal Canadiens blanked Connor McDavid and the Edmonton Oilers 3-0 on Monday. Brendan Gallagher, Kaiden Guhle and Jake Evans — into an empty net — scored for Montreal (7-10-2), which matched its longest win streak of the season with a second consecutive victory. Montembeault earned his second shutout of the…