message: Sets default output in CLI runtime. Closes
diff: @@ -145,7 +145,7 @@ export class Cli {
  // if output not specified, set the configured output value (if any)
  if (optionsWithoutShorts.options.output === undefined) {
  - optionsWithoutShorts.options.output = this.getSettingWithDefaultValue<string | undefined>(settingsNames.output, undefined);
  + optionsWithoutShorts.options.output = this.getSettingWithDefaultValue<string | undefined>(settingsNames.output, 'json');
  }
  const validationResult = await this.commandToExecute.command.validate(optionsWithoutShorts, this.commandToExecute);
  