Merge branch 'fix-log-reason' into 'master'

fix incorrect log message that failed to dump reason

See merge request zstackio/zstack!2387

Author: gitlab

portal/src/main/java/org/zstack/portal/managementnode/ManagementNodeManagerImpl.java

@@ -238,9 +238,9 @@ private void installShutdownHook() {
         Runtime.getRuntime().addShutdownHook(new Thread(() -> {
             String reason = System.getProperty(Platform.EXIT_REASON);
             if (reason != null) {
-                logger.debug("JVM shutdown hook is called, start stopping management node");
-            } else {
                 logger.debug(String.format("JVM shutdown hook is called[reason: %s], start stopping management node", reason));
+            } else {
+                logger.debug("JVM shutdown hook is called, start stopping management node");
             }
 
             stop();