fix #2910 master server will show exception for some time when it restart

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/master/dispatch/host/LowerWeightHostManager.java

@@ -87,7 +87,7 @@ public void init(){
         this.workerHostWeightsMap = new ConcurrentHashMap<>();
         this.lock = new ReentrantLock();
         this.executorService = Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("LowerWeightHostManagerExecutor"));
-        this.executorService.scheduleWithFixedDelay(new RefreshResourceTask(),35, 40, TimeUnit.SECONDS);
+        this.executorService.scheduleWithFixedDelay(new RefreshResourceTask(),0, 40, TimeUnit.SECONDS);
         this.roundRobinHostManager = new RoundRobinHostManager();
         this.roundRobinHostManager.setZookeeperNodeManager(getZookeeperNodeManager());
     }