AMBARI-3342. Add percent journalnodes live alert with HA config'd. (swagle)

ambari-agent/src/main/puppet/modules/hdp-nagios/templates/hadoop-services.cfg.erb

@@ -569,6 +569,18 @@ define service {
         max_check_attempts      3
 }
 
+<%if scope.function_hdp_template_var("::hdp::params::dfs_ha_enabled")-%>
+define service {
+        hostgroup_name          nagios-server
+        use                     hadoop-service
+        service_description     HDFS::Percent JournalNodes live
+        servicegroups           HDFS
+        check_command           check_aggregate!"JOURNALNODE::JournalNode process"!33%!50%
+        normal_check_interval   0.5
+        retry_check_interval    0.25
+        max_check_attempts      3
+}
+<%end-%>
 <%end-%>
 
 <%if scope.function_hdp_nagios_members_exist('slaves')-%>