[Indicators] Begin adding Couch indicator

Begin adding indicator to display connection status for
CouchDB. WTD-608.

platform/persistence/bundle.json

@@ -18,6 +18,21 @@
             {
                 "key": "COUCHDB_PATH",
                 "value": "/couch/openmct"
+            },
+            {
+                "key": "COUCHDB_INDICATOR_INTERVAL",
+                "value": 15000
+            }
+        ],
+        "indicators": [
+            {
+                "implementation": "CouchIndicator.js",
+                "depends": [
+                    "$http",
+                    "$interval",
+                    "COUCHDB_PATH",
+                    "COUCHDB_INDICATOR_INTERVAL"
+                ]
             }
         ]
     }

platform/persistence/src/CouchIndicator.js

@@ -0,0 +1,25 @@
+/*global define*/
+
+define(
+    [],
+    function () {
+        "use strict";
+
+        function CouchIndicator($http, $interval, PATH, INTERVAL) {
+            function updateIndicator() {
+
+            }
+
+            $interval(updateIndicator, INTERVAL);
+
+            return {
+                getGlyph: function () {
+                    return "D";
+                }
+            }
+
+        }
+
+        return CouchIndicator;
+    }
+);