By Alexandra ValenciaQUITO (Reuters) -A shoot-out erupted on Saturday near a restaurant where Ecuadorean presidential candidate Otto Sonnenholzner was eating with his family, police and the candidate said, though the violence was not directed at him. Fellow presidential candidate Daniel Noboa on Thursday said there was an attack on his campaign caravan in Duran, but police later said the shooting was not directed at Noboa, son of prominent banana businessman and former presidential candidate Alvaro Noboa. The police said on Friday morning they detained four people in his killing