refactored tests to match new functionality behaviour

tests/Aggregation/FilterAggregationTest.php

tests/Aggregation/FiltersAggregationTest.php

tests/Aggregation/GeoBoundsAggregationTest.php

tests/Aggregation/GeoDistanceAggregationTest.php

tests/Aggregation/GlobalAggregationTest.php

tests/Aggregation/Ipv4RangeAggregationTest.php

tests/Aggregation/NestedAggregationTest.php

tests/Aggregation/PercentileRanksAggregationTest.php

tests/Aggregation/RangeAggregationTest.php

tests/Aggregation/ReverseNestedAggregationTest.php

tests/Aggregation/StatsAggregationTest.php

tests/Aggregation/TermsAggregationTest.php

tests/Aggregation/TopHitsAggregationTest.php

tests/BuilderBagTest.php

tests/Filter/PostFilterTest.php

tests/Highlight/FieldTest.php

tests/Highlight/HighlightTest.php

tests/Query/IndicesQueryTest.php

tests/Query/QueryTest.php

tests/SearchEndpoint/AggregationsEndpointTest.php