Function rename

test/parallel/test-trace-events-fs-async.js:205–211

()

}

function rename() {
  const fs = require('fs');
  fs.writeFileSync('fs20.txt', '123', 'utf8');
  fs.rename('fs20.txt', 'fs21.txt', () => {
    fs.unlinkSync('fs21.txt');
  });
}

function rmdir() {
  const fs = require('fs');