message: [smoke test] increase the chunk limit to reduce flakiness
  Closes:
  Approved by: christinacelee
diff: @@ -52,7 +52,7 @@ impl TestEnvironment {
  ::libra_logger::Logger::new().init();
  let mut template = NodeConfig::default();
  template.test = Some(TestConfig::open_module());
  - template.state_sync.chunk_limit = 2;
  + template.state_sync.chunk_limit = 5;
  template.consensus.safety_rules.backend =
  SecureBackend::OnDiskStorage(OnDiskStorageConfig::default());
  @@ -683,7 +683,7 @@ fn test_basic_state_synchronization() {
  client_proxy.get_balances(&["b", "1"]).unwrap()
  ));
  - // Test single chunk sync, chunk_size = 2
  + // Test single chunk sync, chunk_size = 5
  let node_to_restart = 0;
  env.validator_swarm.kill_node(node_to_restart);
  // All these are executed while one node is down
  