Add explicit ORDER BY to a few tests that exercise hash-join code.

Andres Freund <andres@anarazel.de>

Commit: 7c5d8c16e12e56c1043ff4a28e07a306a15c2b85
Author: Andres Freund <andres@anarazel.de>
Date: 2017-02-09T00:58:21Z
Releases: 10.0
Add explicit ORDER BY to a few tests that exercise hash-join code.

A proposed patch, also by Thomas and in the same thread, would change
the output order of these.  Independent of the follow-up patches
getting committed, nailing down the order in these specific tests at
worst seems harmless.

Author: Thomas Munro
Discussion: https://postgr.es/m/CAEepm=1D4-tP7j7UAgT_j4ZX2j4Ehe1qgZQWFKBMb8F76UW5Rg@mail.gmail.com

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