By Ann Saphir (Reuters) – It’s not as if U.S. central bankers needed more reasons to step up the pace of interest rate hikes. But that’s what they got on Friday, when the Bureau of Labor Statistics’ latest jobs report showed employers added 431,000 to payrolls last month and the unemployment rate fell to a two-year low of 3.6%. All are signs of a strong labor market with little need for the kind of super-easy monetary policy that the Fed is currently delivering and has begun to unwind. “A very tight labor market got even tighter,” wrote Oxford Economics’ Kathy Bostjancic and Lydia Boussour. Fu…