Fix heart beat task is not seconds

dolphinscheduler-master/src/main/java/org/apache/dolphinscheduler/server/master/registry/MasterRegistryClient.java

@@ -186,7 +186,7 @@ public class MasterRegistryClient {
     void registry() {
         logger.info("Master node : {} registering to registry center", masterAddress);
         String localNodePath = getCurrentNodePath();
-        long masterHeartbeatInterval = masterConfig.getHeartbeatInterval().toMillis();
+        long masterHeartbeatInterval = masterConfig.getHeartbeatInterval().getSeconds();
         HeartBeatTask heartBeatTask = new HeartBeatTask(startupTime,
                 masterConfig.getMaxCpuLoadAvg(),
                 masterConfig.getReservedMemory(),

dolphinscheduler-worker/src/main/java/org/apache/dolphinscheduler/server/worker/registry/WorkerRegistryClient.java

@@ -99,7 +99,7 @@ public class WorkerRegistryClient {
     public void registry() {
         String address = NetUtils.getAddr(workerConfig.getListenPort());
         Set<String> workerZkPaths = getWorkerZkPaths();
-        long workerHeartbeatInterval = workerConfig.getHeartbeatInterval().toMillis();
+        long workerHeartbeatInterval = workerConfig.getHeartbeatInterval().getSeconds();
 
         HeartBeatTask heartBeatTask = new HeartBeatTask(startupTime,
                 workerConfig.getMaxCpuLoadAvg(),