fixing whitespace issue

Author: Aparajita Choudhary

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerWorkflowPriorityMapping.java

@@ -98,7 +98,7 @@ public void testWorkflowPriorityMappings() throws Exception {
     CapacityScheduler cs = (CapacityScheduler) mockRM.getResourceScheduler();
     mockRM.start();
     cs.start();
-    
+
     Map<String, Object> expected = ImmutableMap.of(
         A, ImmutableMap.of("workflow3", Priority.newInstance(4)),
         B, ImmutableMap.of("workflow1", Priority.newInstance(2)),