[COMMITTERS] pgsql: Add minimal regression test for blessed record type transfer.

Add minimal regression test for blessed record type transfer.

Test that blessed records can be transferred through a TupleQueue and
correctly decoded by another backend.  While touching the file, make
sure that force_parallel_mode settings only cover relevant tests.

Author: Thomas Munro, editorialized by Andres Freund
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/20170823054644.efuzftxjpfi6wwqs%40alap3.anarazel.de

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/d36f7efb39e1b9613193b2e12717dbe2418ddae5

Modified Files
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src/test/regress/expected/select_parallel.out | 38 ++++++++++++++++++++++++++-
src/test/regress/sql/select_parallel.sql      | 31 ++++++++++++++++++++--
2 files changed, 66 insertions(+), 3 deletions(-)