postgres_fdw: Attmempt to stabilize regression tests.
Even after commit
882ea509fe7a4711fe25463427a33262b873dfa1, some
buildfarm members are still failing in the postgres_fdw tests.
Try to fix that by disabling use of remote statistics for some
test cases.
Etsuro Fujita
Discussion: http://postgr.es/m/
5A7D76CF.
8080601@lab.ntt.co.jp