Thread: pgsql: On sparc64+ext4, suppress test failures from known WAL read fail

On sparc64+ext4, suppress test failures from known WAL read failure.

Buildfarm members kittiwake, tadarida and snapper began to fail
frequently when commits 3cd9c3b921977272e6650a5efbeade4203c4bca2 and
f47ed79cc8a0cfa154dc7f01faaf59822552363f added tests of concurrency, but
the problem was reachable before those commits.  Back-patch to v10 (all
supported versions).

Discussion: https://postgr.es/m/20220116210241.GC756210@rfd.leadboat.com

Branch
------
REL_12_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/279956817ff4f8e69a2892d0677e303cb2a8c30b

Modified Files
--------------
contrib/amcheck/t/003_cic_2pc.pl |  2 ++
src/test/perl/TestLib.pm         | 23 +++++++++++++++++++++++
2 files changed, 25 insertions(+)