Function Score generates double array

[trylika]

when passing array of functions to FunctionScoreQuery, it generates final query with double array ( https://github.com/ongr-io/ElasticsearchBundle/blob/master/DSL/Query/FunctionScoreQuery.php#L66 ).

Generated query: "function_score": { "query": { "match_all": {} }, "functions": [ [ { "boost_factor": 2, "filter": { "term": { "provider": "faker", "_cache": false } } } ] ], "score_mode": "sum", "boost_mode": "sum" }

passed arguments:

[
            'boost_factor' => $this->boost,
            'filter' => [
                'term' => [
                    $this->field => $value,
                    '_cache' => false,
                ],
            ],
        ],
];

new FunctionScoreQuery(new MatchAllQuery(), $functions);```

[saimaz]

Its already solved in #247