Git add the test file too

Author: admilazz

tests/KubernetesClient.Tests/Kubernetes.Fluent.Tests.cs

@@ -6,6 +6,7 @@
 using System.Net.Http;
 using System.Text;
 using System.Threading.Tasks;
+using k8s.Fluent;
 using k8s.Models;
 using k8s.Tests.Mock;
 using Newtonsoft.Json;