Put back explicit setting of replication values within TAP tests.

Commit 151c0c5f7 neglected the possibility that a TEMP_CONFIG file
would explicitly set max_wal_senders=0; as indeed buildfarm member
thorntail does, so that it can test wal_level=minimal in other test
suites.  Hence, rather than assuming that max_wal_senders=10 will
prevail if we say nothing, set it explicitly.

Set max_replication_slots=10 explicitly too, just to be safe.

Back-patch to v10, like the previous patch.

Discussion: https://postgr.es/m/723911.1601417626@sss.pgh.pa.us

diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index a1dbb447dac01285e79d5fe5d0afc4604a87ff81..a72054cc4d10f2b2b0ad94f09d7526dde916aa70 100644 (file)
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -443,13 +443,16 @@ sub init
        {
            print $conf "wal_level = replica\n";
        }
+       print $conf "max_wal_senders = 10\n";
+       print $conf "max_replication_slots = 10\n";
        print $conf "wal_keep_segments = 20\n";
-       print $conf "max_wal_size = 128MB\n";
        print $conf "wal_log_hints = on\n";
        print $conf "hot_standby = on\n";
        # conservative settings to ensure we can run multiple postmasters:
        print $conf "shared_buffers = 1MB\n";
        print $conf "max_connections = 20\n";
+       # limit disk space consumption, too:
+       print $conf "max_wal_size = 128MB\n";
    }
    else
    {