PRECIOUS-Gold claws back from 4-month low; investors await Fed

* Fed widely expected to keep interest rates steady * Firm dollar likely to cap upside for gold -traders * Spot gold could retest support at $1,302/oz -technicals (Adds comment, updates prices) By Eileen Soreng BENGALURU, May 2(Reuters) - Gold prices rose on Wednesday, ticking up from a four-month low hit in the previous session, as Chinese buyers returned to the market following the Labour Day holiday, while investors waited for cues on U.S. monetary policy from a two-day