pgsql: Fix BF failure introduced in commit 2bf6c9ff71.

Fix BF failure introduced in commit 2bf6c9ff71.

The sequence subscription test switches regress_seq_sub to connect to the
publisher as regress_seq_repl (a non-superuser) when checking behavior
with insufficient sequence privileges but forgot to set up pg_hba.conf to
allow connections from it. The special setup is only needed on Windows
machines that don't use UNIX sockets.

As per buildfarm.

Reported-by: Ajin Cherian <itsajin(at)gmail(dot)com>
Author: Ayush Tiwari <ayushtiwari(dot)slg01(at)gmail(dot)com>
Reviewed-by: vignesh C <vignesh21(at)gmail(dot)com>
Discussion: https://postgr.es/m/CAFPTHDad911HUMkHgD1KZk+WOvTopiBcYf4C_8Fqj1-sZk3xgw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/f67dbd8398c060362802cb559261893881c21cbe

Modified Files
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src/test/subscription/t/036_sequences.pl | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)