pgsql: Use terse mode to avoid variable order dependency output in fore

Use terse mode to avoid variable order dependency output in foreign data regression check.

Per Tom Lane's suggestion about my gripe about occasional errors noticed on the buildfarm.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/625744ac43360ca3f4a6d3eccecb6f4c999a1a63

Modified Files
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src/test/regress/expected/foreign_data.out | 9 ++++-----
src/test/regress/sql/foreign_data.sql | 4 ++++
2 files changed, 8 insertions(+), 5 deletions(-)