Setup Opera webdriver

        :param capabilities: capabilities object
        :returns: a new local Opera driver

def _setup_opera(self, capabilities):
        """Setup Opera webdriver

        :param capabilities: capabilities object
        :returns: a new local Opera driver
        """
        opera_driver = self.config.get('Driver', 'opera_driver_path')
        self.logger.debug("Opera driver path given in properties: %s", opera_driver)
        return webdriver.Opera(executable_path=opera_driver, desired_capabilities=capabilities)