Prepare for raftable

Author: knizhnik

tests2/lib/bank_client.py

@@ -139,7 +139,7 @@ def exec_tx(self, name, tx_block):
             except psycopg2.Error as e:
                 print("=== node%d: %s" % (self.node_id, e.pgerror))
                 self.history.register_finish(event_id, e.pgerror)
-                time.sleep(0.2)
+                #time.sleep(0.2)
 
         cur.close()
         conn.close()