Commit
8e2b6d45a0 added a new unprivileged user for testing
pg_basebackup, but omitted to add them to the cluster's authorized
logins, breaking Windows tests run without using Unix sockets.
umask(0077);
# Initialize node without replication settings
-$node->init(extra => ['--data-checksums']);
+$node->init(extra => ['--data-checksums'],
+ auth_extra => [ '--create-role', 'backupuser' ]);
$node->start;
my $pgdata = $node->data_dir;