That definitely
was a feature, but I don't believe it's in the game currently, and I don't know that it was in NHL15 either.
Edit: That said, I don't think it was ever particularly well done (like line changes in general in the game). It flashed up briefly, but gave you all of about 3 seconds to choose your line before the animation for the faceoff started, and whatever line was going was sent out.
At the same time, with the way the AI plays, line matching sadly doesn't matter much. Even in Be a GM, I'm more focused on which line is rested, then I might go for an offensive line if I'm getting an offensive zone start.