Predicates are not always pushed to Kudu

# Q6 - Forecasting Revenue Change Query
select
 round(sum(l_extendedprice * l_discount), 2) as revenue
from
  tpch_kudu.lineitem
where
  l_shipdate >= '1994-01-01'
  and l_shipdate < '1995-01-01'
  and l_discount between 0.05 and 0.07
  and l_quantity < 24
---- PLAN
01:AGGREGATE [FINALIZE]
|  output: sum(l_extendedprice * l_discount)
|
00:SCAN KUDU [tpch_kudu.lineitem]
   *predicates: l_quantity < 24, l_shipdate < '1995-01-01'*
   kudu predicates: l_discount >= 0.05, l_discount <= 0.07, l_shipdate >= '1994-01-01'