pgsql: pg_dump test: Make concatenated create_sql commands more readabl

pg_dump test: Make concatenated create_sql commands more readable

When the pg_dump 002_pg_dump.pl test generates the command to load the
schema, it does

# Add terminating semicolon
$create_sql{$test_db} .= $tests{$test}->{create_sql} . ";";

In some cases, this creates a duplicate semicolon, but more
importantly, this doesn't add any newline. So if you look at the
result in either the server log or in
tmp_check/log/regress_log_002_pg_dump, it looks like a complete mess.
This patch makes the output look cleaner for manual inspection: add
semicolon only if necessary, and add two newlines.

Discussion: https://www.postgresql.org/message-id/flat/d6aec95a-8729-43cc-2578-f2a5e46640e0%40enterprisedb.com

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/6e10631d1e6e350ba3f82b0bd3a29678f9f5badd

Modified Files
--------------
src/bin/pg_dump/t/002_pg_dump.pl | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)