NEW YORK (Reuters) - Goldman Sachs Group Inc named David Solomon as its next chief executive officer on Tuesday, ushering in a new era for the Wall Street bank as it expands into different businesses and revamps familiar ones. Solomon’s promotion from his current role as president and chief operating officer comes months after the 56-year-old investment banker was first reported as next in line to succeed longtime CEO Lloyd Blankfein. His first day in charge is October 1.