pgsql: Add TAP test in pg_dump with --format=tar and --compress

Add TAP test in pg_dump with --format=tar and --compress

This combination of options has never been supported, and it has never
been checked in the regression tests.  When building the code without
zlib support, pg_dump is allowed to run and it generates a warning to
inform that any contents are dumped as uncompressed.  The tests added by
this commit check both behaviors.

Author: Georgios Kokolatos, Rachel Heaton
Discussion:
https://postgr.es/m/faUNEOpts9vunEaLnmxmG-DldLSg_ql137OC3JYDmgrOMHm1RvvWY2IdBkv_CRxm5spCCb_OmKNk2T03TMm0fBEWveFF9wA1WizPuAgB7Ss=@protonmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/edcedcc2c7bb8390858bbccda9637318598f2473

Modified Files
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src/bin/pg_dump/t/001_basic.pl | 16 ++++++++++++++++
1 file changed, 16 insertions(+)