AMBARI-3693 [perf] Hosts UI should not load host_components unless editing a host, second patch. (atkach)
AMBARI-3686. NameNode HA wizard (Configure Components step): Task "Reconfigure HDFS" always fail, and user cannot proceed to next step (alexantonenko)
AMBARI-3683. NameNode HA: Reconfigure dfs.namenode.https-address property in hdfs-site.xml (alexantonenko)