MADRID, May 6 (Reuters) - Real Sociedad's hopes of qualifying for the Champions League for the first time in a decade suffered a setback when they surrendered the lead and lost 2-1 at fellow European hopefuls Getafe in La Liga on Monday. The Basque club's reverse at Getafe's Coliseum stadium in Madrid means they still occupy fourth and Spain's final qualification berth for Europe's elite club competition but their lead over fifth-placed Valencia has been cut to two points after Valencia's 4-0 win at home to Osasuna on Saturday. ... More...