Group CQL keys into a single query [cql-tests] [tp-tests] #422

Job	Run time
build-all	1m 29s
tests (scylla, -Pscylla-murmur -Dtest="*/diskstorage/cql/", murmur-diskstorage, 8)	15m 0s
tests (scylla, -Pscylla-murmur -Dtest="*/graphdb/cql/", murmur-graphdb, 8)	1h 2m 34s
tests (scylla, -Pscylla-murmur -Dtest="*/hadoop/", murmur-hadoop, 8)	11m 34s
tests (scylla, -Pscylla-murmur -Dtest="*/core/cql/", murmur-core, 8)	3m 43s
tests (scylla, -Pscylla-murmur -Dtest="*/diskstorage/cql/", murmur-diskstorage, -Pjava-11, 11)	18m 2s
tests (scylla, -Pscylla-murmur -Dtest="*/graphdb/cql/", murmur-graphdb, -Pjava-11, 11)	57m 57s
tests (scylla, -Pscylla-murmur -Dtest="*/hadoop/", murmur-hadoop, -Pjava-11, 11)	13m 11s
tests (scylla, -Pscylla-murmur -Dtest="*/core/cql/", murmur-core, -Pjava-11, 11)	4m 21s
	3h 7m 51s

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