(Adds details, quotes) By Pritha Sarkar LONDON, June 30 (Reuters) – Andy Murray produced the kind of imperious form that has propelled him into two grand slam finals this year as he beat Taiwan’s Lu Yen-hsun 6-3 6-2 6-1 in the Wimbledon second round on Thursday. Lu, the son of a chicken farmer, ruffled a few feathers on Centre Court when he jumped out to a 2-0 lead before extending it to 3-1 in the opening set. From 3-2 up in the second set, Murray won seven games on the trot as Lu struggled to find a way to keep pace with Murray’s potent groundstrokes.