No, he did not! He was a Quebecois separatist, probably mentally ill, who was for Trump, and against Muslims. It doesn't even make sense he would shout this, although I have seen it written in several places. Even the right wing anti-Muslim in France, whom he said he was following, came out against this atrocity.
I wish Trudeau had not let in all the refuges so quickly, but these people who were shot, were known to have moved to Canada long before this new crisis in the Middle East, and some had specifically picked Canada because they had hoped for "peace." I guess they were the Muslims who don't really follow the whole Qur'an, and figure they are safe as long as they turn up for prayers.