Thread: pgsql: Log more info when wait-for-catchup tests time out.

Log more info when wait-for-catchup tests time out.

Cluster.pm's wait_for_catchup and allied subroutines don't provide
enough information to diagnose the problem when a wait times out.
In hopes of debugging some intermittent buildfarm failures, let's
dump the ending state of the relevant system view when that happens.

Add this to v17 too, but not stable branches.

Discussion: https://postgr.es/m/352068.1723422725@sss.pgh.pa.us

Branch
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REL_17_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/e57296ed4867b3a3734db9ca621223c30eebb90d

Modified Files
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src/test/perl/PostgreSQL/Test/Cluster.pm | 27 +++++++++++++++++++++++----
1 file changed, 23 insertions(+), 4 deletions(-)