pgsql: postgresql.conf.sample: add proper defaults for include actions

postgresql.conf.sample:  add proper defaults for include actions

Previously, include actions include_dir, include_if_exists, and include
listed commented-out values which were not the defaults, which is
inconsistent with other entries.  Instead, replace them with '', which
is the default value.

Reported-by: Emanuel Araújo

Discussion: https://postgr.es/m/CAMuTAkYMx6Q27wpELDR3_v9aG443y7ZjeXu15_+1nGUjhMWOJA@mail.gmail.com

Backpatch-through: 9.4

Branch
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REL_10_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/fea2cab70de8d190762996c7c447143fb47bcfa3

Modified Files
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src/backend/utils/misc/postgresql.conf.sample | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)