Adds quotes on growth in 2nd, 3rd, 4th paragraphs, jobs in fifth NEW YORK, June 8 (Reuters) - Goldman Sachs Group Inc. GS.N is planning for a period of sluggish growth and higher inflation, the bank's president John Waldron said on Thursday, calling it "a mini-stagflation scenario". There will be a tougher environment for capital markets and financing as CEOs remain cautious, Waldron told a Bloomberg conference on Thursday. Despite the U.S. economy showing resilience, concerns remain among investors that a recession could happen in an environment of stubborn inflation and high borrowing costs.