[ONOS-3203] End-to-end demo of Fault Management via SNMP.

This adds SNMP device-discovery, and a Fault Management app which makes alarms available to users via REST/GUI/CLI interfaces.
There is still code cleanup that could be done, but aim of this commit is an end-to-end proof of concept.

To demonstrate :

1) /opt/onos/bin/onos-service
onos> app activate org.onosproject.snmp
onos> app activate org.onosproject.faultmanagement

2) SNMP devices are seeded via config file. The default seed file contains connection details for devices (SNMP agents) available via internet  e.g. demo.snmplabs.com
cp /opt/onos/apache-karaf-3.0.3/etc/samples/org.onosproject.provider.snmp.device.impl.SnmpDeviceProvider.cfg   /opt/onos/apache-karaf-3.0.3/etc/

3) ONOS will poll these SNMP devices and store their alarms.

4) You can now manipulate the alarms via REST  e.g. http://<onos>:8181/onos/v1/fm/alarms , via CLI  via various "alarm-*” commands or in UI with an Alarms Overlay.

More info at https://wiki.onosproject.org/display/ONOS/Fault+Management

15/Dec/15: Updated regarding review comments from Thomas Vachuska.
17/Dec/15: Updated coreService.registerApplication(name) as per https://gerrit.onosproject.org/#/c/6878/

Change-Id: I886f8511f178dc4600ab96e5ff10cc90329cabec
diff --git a/apps/faultmanagement/fmgui/src/main/resources/app/view/alarmTopov/alarmTopovDemo.js b/apps/faultmanagement/fmgui/src/main/resources/app/view/alarmTopov/alarmTopovDemo.js
new file mode 100644
index 0000000..8c4846e
--- /dev/null
+++ b/apps/faultmanagement/fmgui/src/main/resources/app/view/alarmTopov/alarmTopovDemo.js
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ Alarm Demo module. This contains the "business logic" for the topology
+ overlay that we are implementing.
+ */
+
+(function () {
+    'use strict';
+
+    // injected refs
+    var $log, fs, flash, wss;
+
+    // constants
+    var displayStart = 'alarmTopovDisplayStart',
+        displayUpdate = 'alarmTopovDisplayUpdate',
+        displayStop = 'alarmTopovDisplayStop';
+
+    // internal state
+    var currentMode = null;
+
+
+    // === ---------------------------
+    // === Helper functions
+
+    function sendDisplayStart(mode) {
+        wss.sendEvent(displayStart, {
+            mode: mode
+        });
+    }
+
+    function sendDisplayUpdate(what) {
+        wss.sendEvent(displayUpdate, {
+            id: what ? what.id : ''
+        });
+    }
+
+    function sendDisplayStop() {
+        wss.sendEvent(displayStop);
+    }
+
+    // === ---------------------------
+    // === Main API functions
+
+    function startDisplay(mode) {
+        if (currentMode === mode) {
+            $log.debug('(in mode', mode, 'already)');
+        } else {
+            currentMode = mode;
+            sendDisplayStart(mode);
+            flash.flash('Starting display mode: ' + mode);
+        }
+    }
+
+    function updateDisplay(m) {
+        if (currentMode) {
+            sendDisplayUpdate(m);
+        }
+    }
+
+    function stopDisplay() {
+        if (currentMode) {
+            currentMode = null;
+            sendDisplayStop();
+            flash.flash('Canceling display mode');
+            return true;
+        }
+        return false;
+    }
+
+    // === ---------------------------
+    // === Module Factory Definition
+
+    angular.module('ovAlarmTopov', [])
+        .factory('AlarmTopovDemoService',
+        ['$log', 'FnService', 'FlashService', 'WebSocketService',
+
+        function (_$log_, _fs_, _flash_, _wss_) {
+            $log = _$log_;
+            fs = _fs_;
+            flash = _flash_;
+            wss = _wss_;
+
+            return {
+                startDisplay: startDisplay,
+                updateDisplay: updateDisplay,
+                stopDisplay: stopDisplay
+            };
+        }]);
+}());