AMBARI-8218.  Replace hostnames with host_group tokens for property
"oozie.service.ProxyUserService.proxyuser.knox.hosts" when doing
blueprint export
AMBARI-8223. Slider View: 'site.global.ganglia_enabled' set to true even when monitoring disabled (srimanth)
AMBARI-8222. Correct hostname:port regex should be used for timeline server properties to replace hostname. (jaimin)
AMBARI-8215. Flume Service Metrics do not show on Services>Flume page.(xiwang)