Revert "Temporarily ignore failing test case due to unknown cause"

This reverts commit 25cea27.

Author: terence-yoo

hbase-server/src/test/java/org/apache/hadoop/hbase/master/http/TestMasterStatusUtil.java

@@ -52,7 +52,6 @@
 import org.apache.hadoop.hbase.zookeeper.ZNodePaths;
 import org.junit.Before;
 import org.junit.ClassRule;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 import org.mockito.Mockito;
@@ -199,7 +198,6 @@ public void testGetFragmentationInfoTurnedOff() throws IOException {
     assertNull(MasterStatusUtil.getFragmentationInfo(master, conf));
   }
 
-  @Ignore
   @Test
   public void testGetFragmentationInfoTurnedOn() throws IOException {
     conf.setBoolean("hbase.master.ui.fragmentation.enabled", true);