ui: Update config file with tables that users can see (#3429)

This is a purely documentation change of config file.
The cleanup was needed post merge of PR #3258

Author: Anurag Awasthi

ui/config.js

@@ -29,10 +29,7 @@ cloudStackOptions = {
         "jp": "label.japanese.keyboard",
         "sc": "label.simplified.chinese.keyboard"
     },
-    hiddenFields: {
-        "metrics.zones":[], // Options - "name", "state", "clusters", "cpuused", "cpuallocated", "memused", "memallocated"
-        "metrics.clusters": [], // Options - "name", "state", "hosts", "cpuused", "cpuallocated", "memused", "memallocated"
-        "metrics.hosts": [], // Options - "name", "state", "powerstate", "instances", "cpuused", "memused", "network"
+    hiddenFields: { // Fields to be hidden only for users in the tables below
         "metrics.storagepool": [], // Options - "name", "property", "disk",
         "metrics.instances": [], // Options - "name", "state", "ipaddress", "zonename", "cpuused", "memused", "network", "disk"
         "metrics.volumes": [] // Options - "name", "state", "vmname", "sizegb", "physicalsize", "utilization", "storagetype", "storage"