Get an instance of AnsiblePlaybook and returns it.

        :param playbook: A string containing an absolute path to a
         provisioner's playbook.
        :param kwargs: An optional keyword arguments.
        :return: object

def _get_ansible_playbook(self, playbook, **kwargs):
        """
        Get an instance of AnsiblePlaybook and returns it.

        :param playbook: A string containing an absolute path to a
         provisioner's playbook.
        :param kwargs: An optional keyword arguments.
        :return: object
        """
        return ansible_playbook.AnsiblePlaybook(playbook, self._config,
                                                **kwargs)