Orca nestloop join should not broadcast co-located tables about gporca HOT 2 CLOSED

Solved for simple NLJ with pr #409

from gporca.

vraghavan=# explain select * from R, S where R.a=S.a;
QUERY PLAN

Gather Motion 3:1 (slice1; segments: 3) (cost=0.00..1324032.35 rows=1 width=16)
-> Nested Loop (cost=0.00..1324032.35 rows=1 width=16)
Join Filter: (r.a = s.a)
-> Table Scan on r (cost=0.00..431.00 rows=1 width=8)
-> Table Scan on s (cost=0.00..431.00 rows=1 width=8)
Planning time: 55.002 ms
Optimizer: PQO version 3.6.0
(7 rows)

from gporca.