Make a 100_bugs.pl test more faster.

commit 72ea85b5f6a64f2c53e6a55455d134b228b6994b
Author: Anton A. Melnikov <a.melnikov@postgrespro.ru>
Date:   Mon Nov 14 08:30:26 2022 +0300

    Reuse nodes in subscription/t/100_bugs.pl test to make in faster.

diff --git a/src/test/subscription/t/100_bugs.pl b/src/test/subscription/t/100_bugs.pl
index 6247aa7730..525584b2b6 100644
--- a/src/test/subscription/t/100_bugs.pl
+++ b/src/test/subscription/t/100_bugs.pl
@@ -81,9 +81,8 @@ $node_subscriber->stop('fast');
 # identity set before accepting updates.  If it did not it would cause
 # an error when an update was attempted.
 
-$node_publisher = PostgreSQL::Test::Cluster->new('publisher2');
-$node_publisher->init(allows_streaming => 'logical');
-$node_publisher->start;
+$node_publisher->rotate_logfile();
+$node_publisher->start();
 
 $node_publisher->safe_psql('postgres',
 	"CREATE PUBLICATION pub FOR ALL TABLES");
@@ -226,13 +225,13 @@ $node_sub->stop('fast');
 # target table's relcache was not being invalidated. This leads to skipping
 # UPDATE/DELETE operations during apply on the subscriber side as the columns
 # required to search corresponding rows won't get logged.
-$node_publisher = PostgreSQL::Test::Cluster->new('publisher3');
-$node_publisher->init(allows_streaming => 'logical');
-$node_publisher->start;
 
-$node_subscriber = PostgreSQL::Test::Cluster->new('subscriber3');
-$node_subscriber->init(allows_streaming => 'logical');
-$node_subscriber->start;
+$node_publisher->rotate_logfile();
+$node_publisher->start();
+
+$node_subscriber->rotate_logfile();
+$node_subscriber->rotate_logfile(); # call twice to synchronize lognames between master and replica
+$node_subscriber->start();
 
 $node_publisher->safe_psql('postgres',
 	"CREATE TABLE tab_replidentity_index(a int not null, b int not null)");