By Selena Li and Lawrence White HONG KONG/LONDON (Reuters) – HSBC is facing queries from customers about its commitment to fight climate change after a senior banker downplayed the risks, sources told Reuters, with at least one large institutional investor reconsidering whether to employ the bank for a sustainability role, according to one of the people. The investor, which manages in excess of $100 billion, plans to seek opinions from consultants on whether HSBC Asset Management should help manage its sustainability funds in the wake of the controversial comments, said the person with direct …