[YARN-10626] Log resource allocation in NM log at container start time. Contributed by Eric Badger

(cherry picked from commit e6f5dbbe7f556e3525293814ad2239e4f04d88ad)

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

@@ -1078,8 +1078,10 @@ public class ContainerManagerImpl extends CompositeService implements
     ContainerId containerId = containerTokenIdentifier.getContainerID();
     String containerIdStr = containerId.toString();
     String user = containerTokenIdentifier.getApplicationSubmitter();
+    Resource containerResource = containerTokenIdentifier.getResource();
 
-    LOG.info("Start request for " + containerIdStr + " by user " + user);
+    LOG.info("Start request for " + containerIdStr + " by user " + user +
+        " with resource " + containerResource);
 
     ContainerLaunchContext launchContext = request.getContainerLaunchContext();