misc: Enable Spark query runner as reference in aggregation fuzzer test #280

Job	Run time
compile	1h 13m 41s
presto-java-aggregation-fuzzer-run	1h 58m 28s
spark-java-aggregation-fuzzer-run	1h 28m 26s
spark-expression-fuzzer-run	30m 55s
presto-expression-fuzzer-run	30m 56s
linux-join-fuzzer-run	31m 4s
	6h 13m 30s

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