Check that source service sent at most num_request to the dest service
        :param source the source service name
        :param dest the destination service name
        :param num_requests the maximum number of requests that we expect
        :return:

def check_at_most_requests(self, source, dest, num_requests, **kwargs):
        """
        Check that source service sent at most num_request to the dest service
        :param source the source service name
        :param dest the destination service name
        :param num_requests the maximum number of requests that we expect
        :return:
        """
        # TODO: Does the proxy support logging of instances so that grouping by instance is possible?

        if self.debug:
            print 'in check_at_most_requests (%s, %s, %s, %s)' % (source, dest, num_requests, self._id)

        # Fetch requests for src->dst
        data = self._es.search(body={
            "size": max_query_results,
            "query": {
                "filtered": {
                    "query": {
                        "match_all": {}
                    },
                    "filter": {
                        "bool": {
                            "must": [
                                {"term": {"msg": "Request"}},
                                {"term": {"source": source}},
                                {"term": {"dest": dest}},
                                {"term": {"protocol": "http"}},
                                {"term": {"testid": self._id}}
                            ]
                        }
                    }
                }
            },
            "aggs": {
                # Need size, otherwise only top buckets are returned
                #"size": max_query_results,
                "byid": {
                    "terms": {
                        "field": "reqID",
                    }
                }
            }
        })

        if self.debug:
            pprint.pprint(data)

        result = True
        errormsg = ""
        if not self._check_non_zero_results(data):
            result = False
            errormsg = "No log entries found"
            return GremlinTestResult(result, errormsg)

        # Check number of requests in each bucket
        for bucket in data["aggregations"]["byid"]["buckets"]:
            if bucket["doc_count"] > (num_requests + 1):
                errormsg = "{} -> {} - expected {} requests, but found {} "\
                         "requests for id {}".format(
                            source, dest, num_requests, bucket['doc_count'] - 1,
                            bucket['key'])
                result = False
                if self.debug:
                    print errormsg
                return GremlinTestResult(result, errormsg)
        return GremlinTestResult(result, errormsg)