AMBARI-6675. Enable NameNode HA wizard->Review Page: Show spinner and disable next button while configurations are getting loaded. (alexantonenko)
AMBARI-6677 Addable and deletable components should be derived from cardinality field. (Buzhor Denys via ababiichuk)
AMBARI-6678. Host registration hanging (and timing-out) on SLES during setupAgent.py.(vbrodetskyi)