:param service_name: the name of the service
        :type service_name: str
        :param limit: the Limit this relates to
        :type limit: :py:class:`~.AwsLimit`
        :param crits: the specific usage values that crossed the critical
          threshold
        :type usage: :py:obj:`list` of :py:class:`~.AwsLimitUsage`
        :param crits: the specific usage values that crossed the warning
          threshold
        :type usage: :py:obj:`list` of :py:class:`~.AwsLimitUsage`

def print_issue(self, service_name, limit, crits, warns):
        """
        :param service_name: the name of the service
        :type service_name: str
        :param limit: the Limit this relates to
        :type limit: :py:class:`~.AwsLimit`
        :param crits: the specific usage values that crossed the critical
          threshold
        :type usage: :py:obj:`list` of :py:class:`~.AwsLimitUsage`
        :param crits: the specific usage values that crossed the warning
          threshold
        :type usage: :py:obj:`list` of :py:class:`~.AwsLimitUsage`
        """
        usage_str = ''
        if len(crits) > 0:
            tmp = 'CRITICAL: '
            tmp += ', '.join([str(x) for x in sorted(crits)])
            usage_str += self.color_output(tmp, 'red')
        if len(warns) > 0:
            if len(crits) > 0:
                usage_str += ' '
            tmp = 'WARNING: '
            tmp += ', '.join([str(x) for x in sorted(warns)])
            usage_str += self.color_output(tmp, 'yellow')
        k = "{s}/{l}".format(
            s=service_name,
            l=limit.name,
        )
        v = "(limit {v}) {u}".format(
            v=limit.get_limit(),
            u=usage_str,
        )
        return (k, v)