Validate feed, print reports and return an exit code.

def RunValidationOutputToConsole(feed, options):
  """Validate feed, print reports and return an exit code."""
  accumulator = CountingConsoleProblemAccumulator(
      options.error_types_ignore_list)
  problems = transitfeed.ProblemReporter(accumulator)
  _, exit_code = RunValidation(feed, options, problems)
  return exit_code