Added a test case for MONDRIAN-1458: Native exclusion predicate doesn't use agg table when checking for nulls. This was fixed in master in 1a62586962a854bfec36e8c2d47b5f1fce98d4d6, but the problem does not appear currently in lagunitas.  MONDRIAN-1372 involves SqlTupleReader not using the aggregate table, which is the specific scenario 1458 occurs with.   Added this test to verify functionality once 1372 is addressed.