YARN-10540. Node page is broken in YARN UI1 and UI2 including RMWebService api

for nodes. Contributed by Jim Brennan.

(cherry picked from commit 4c5d88e230fa7adbb4a041c9a33bea2ef5a36fd3)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeResourceMonitorImpl.java

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeResourceMonitorImpl.java

@@ -46,7 +46,8 @@ public class NodeResourceMonitorImpl extends AbstractService implements
   private ResourceCalculatorPlugin resourceCalculatorPlugin;
 
   /** Current <em>resource utilization</em> of the node. */
-  private ResourceUtilization nodeUtilization;
+  private ResourceUtilization nodeUtilization =
+      ResourceUtilization.newInstance(0, 0, 0f);
 
   /**
    * Initialize the node resource monitor.