MELBOURNE, May 24 (Reuters) - Injuries are piling up for the Queensland Reds at the worst possible time as they prepare for arguably the biggest test in Super Rugby against a rampaging Canterbury Crusaders side in Christchurch. Having lost flyhalf James O'Connor to a hamstring strain on Monday, centre Josh Flook will join him on the sidelines after dislocating a shoulder in the home win over bottom-placed...