Implement get Wifi status.

lib/roles/device/plugins/service.js

@@ -535,6 +535,21 @@ module.exports = syrup.serial()
         })
     }
 
+    plugin.getWifiStatus = function() {
+      return runServiceCommand(
+        apk.wire.MessageType.GET_WIFI_STATUS
+      , new apk.wire.GetWifiStatusRequest()
+      )
+      .timeout(10000)
+      .then(function(data) {
+        var response = apk.wire.GetWifiStatusResponse.decode(data)
+        if (response.success) {
+          return response.status
+        }
+        throw new Error('Unable to get Wifi status')
+      })
+    }
+
     function runServiceCommand(type, cmd) {
       var resolver = Promise.defer()
       var id = Math.floor(Math.random() * 0xFFFFFF)