AMBARI-6697. Fix nagios alerts for ResourceManager HA mode.(vbrodetskyi)
AMBARI-6699. RE: Nagios UI on Ubuntu cannot find multiple files resulting in broken markup (aonishuk)
AMBARI-6701 HBase did not put to Maintenance Mode during Rolling Restart for RegionServers with checked 'Turn On Maintenance Mode'.(ababiichuk)
AMBARI-6625 Create custom action to validate configs (dsen)