fixed configuration by adding missing default values
fixed configuration by adding missing default values

saimaz/ElasticsearchBundle,martiis/ElasticsearchBundle,ongr-io/ElasticsearchBundle,trandangtri/ElasticsearchBundle,martiis/ElasticsearchBundle,murnieza/ElasticsearchBundle,saimaz/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle,tautrimas/ElasticsearchBundle,asev/ElasticsearchBundle,trandangtri/ElasticsearchBundle,asev/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle,tautrimas/ElasticsearchBundle,murnieza/ElasticsearchBundle