fix missing update cmd status

Author: Yang Guo

platform-control-center/src/main/java/com/flow/platform/cc/service/AgentServiceImpl.java

@@ -156,6 +156,10 @@ public List<Agent> list(String zone) {
 
     @Override
     public void saveWithStatus(Agent agent, AgentStatus status) {
+        if (agent == null || status == null) {
+            return;
+        }
+
         if (!agentDao.exist(agent.getPath())) {
             throw new AgentErr.NotFoundException(agent.getName());
         }

platform-control-center/src/main/java/com/flow/platform/cc/service/CmdServiceImpl.java

@@ -236,6 +236,9 @@ public void updateStatus(CmdStatusItem statusItem, boolean inQueue) {
             return;
         }
 
+        // update cmd status
+        save(cmd);
+
         // compare exiting cmd result and update
         CmdResult inputResult = statusItem.getCmdResult();