(Reuters) -Chinese autonomous driving developer Momenta is considering shifting its IPO to Hong Kong from New York, four people said, adding to a growing list of Chinese companies opting to debut in the Asian financial hub amid heightened U.S.-China tensions. The potential change in Momenta's listing venue comes after the expiration in June of an approval by China's securities regulator to list in the U.S., which was granted mid-last year, according to the regulator's website. Momenta is a leading Chines ...