Restart node test (#3459) (#3465)

* Restart node test (#3459)

* Add test to local_cluster for restarting a node

* fix so that we don't hit end of epoch - leader not found before trying to transfer

* Do not look for confirmations, b/c nobody is voting on empty transmissions in this single node test

core/src/poh_recorder.rs

@@ -232,6 +232,7 @@ impl PohRecorder {
                 working_bank.bank.slot()
             );
             self.start_slot = working_bank.max_tick_height / working_bank.bank.ticks_per_slot();
+            self.start_tick = (self.start_slot + 1) * working_bank.bank.ticks_per_slot();
             self.clear_bank();
         }
         if e.is_err() {