HDFS-9776. testMultipleAppendsDuringCatchupTailing is flaky (#2410)

Co-authored-by: ahussein <ahmed.hussein@verizonmedia.com>
(cherry picked from commit ae74407ac43a480a010d40c182c1d4cc5346db8f)

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAAppend.java

@@ -60,7 +60,8 @@ public class TestHAAppend {
     // control the ingest of edits by the standby for this test.
     conf.set(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, "5000");
     conf.setInt(DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_KEY, -1);
-
+    conf.setBoolean(DFSConfigKeys.DFS_NAMENODE_REDUNDANCY_CONSIDERLOAD_KEY,
+        false);
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
         .nnTopology(MiniDFSNNTopology.simpleHATopology())
         .numDataNodes(3).build();