AMBARI-517. Dashboard shows HDFS is down though it's still running (Contributed by Suhas)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/branches/ambari-186@1347369 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -6,6 +6,8 @@ characters wide.
 
 Release 0.1.x - unreleased
 
+  AMBARI-517. Dashboard shows HDFS is down though it's still running (Suhas via Vikram)
+
   AMBARI-511. Fix for previous patch (Jitendra via Vikram)
 
   AMBARI-516. Fix epel install to be using curl calls. (Mahadev via Vikram)

hmc/puppet/modules/hdp-dashboard/templates/cluster_configuration.json.erb

@@ -19,7 +19,7 @@
       "web_root": "/nagios"
     },
     "jmx": {
-      "timeout": 1
+      "timeout": 3
     },
     "services": {
 	  "HDFS" : [