pgsql: In 020_createdb.pl, change order of command-line arguments.

In 020_createdb.pl, change order of command-line arguments.

Linux thinks that something like "createdb foo -S bar" is perfectly
fine, but Windows wants the options to precede any bare arguments, so
we must write "createdb -S bar foo" for portability.

Per reports from CI, the buildfarm, and Andres.

Discussion: http://postgr.es/m/20220329173536.7d2ywdatsprxl4x6@alap3.anarazel.de

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/3d067c53b26dfeb95da0d75a65614b4d7b45c317

Modified Files
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src/bin/scripts/t/020_createdb.pl | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)