Decrease memory use of integration tests
Decrease memory use of integration tests

vaibhav345/lenskit,tajinder-txstate/lenskit,kluver/lenskit,kluver/lenskit,kluver/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,vaibhav345/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,tajinder-txstate/lenskit,kluver/lenskit,kluver/lenskit