By Johnny Carvajal CARACAS (Reuters) – Samuel Rodriguez’s pizzeria in Caracas does not just serve up hot cheesy pies – it also dishes out jokes, offering a stage to young comedians filling the void left by veteran comics who have fled Venezuela’s economic crisis. Rodriguez, 36, performs himself several days a week in what he describes as a kind of catharsis for dealing with day-to-day problems, at the unlikely spot that is one of a growing number of venues in Venezuela’s capital attracting stand-up fans. But politics is not necessarily on the menu. The public and comedians alike are worn out b…