[tests] ManagedLedgerFactoryChangeLedgerPathTest is flaky (apache#5766)

*Motivation*

ManagedLedgerFactoryChangeLedgerPathTest sets the zk session timeout to 10 ms.

10ms is too low for a zookeeper client to connect to the zookeeper server.

*Modifications*

Remove zkSessionTimeout and use the default

managed-ledger/src/test/java/org/apache/bookkeeper/mledger/impl/ManagedLedgerFactoryChangeLedgerPathTest.java

@@ -49,7 +49,6 @@ public void testChangeZKPath() throws Exception {
         configuration.setUseV2WireProtocol(true);
         configuration.setEnableDigestTypeAutodetection(true);
         configuration.setAllocatorPoolingPolicy(PoolingPolicy.UnpooledHeap);
-        configuration.setZkTimeout(10);
 
         ManagedLedgerFactory factory = new ManagedLedgerFactoryImpl(configuration, zkConnectString);