Allow multi patch http content type header (#521)

* header from obj

* update git version mod

* remove json patch test

* test for json patch

tests/KubernetesClient.Tests/JsonPatchTests.cs

@@ -1,19 +0,0 @@
-using System.Linq;
-using k8s.Models;
-using Microsoft.AspNetCore.JsonPatch;
-using Xunit;
-
-namespace k8s.Tests
-{
-    public class JsonPatchTests
-    {
-        [Fact]
-        public void PathContainsUpperCase()
-        {
-            var patch = new JsonPatchDocument<V1HorizontalPodAutoscaler>();
-            patch.Replace(h => h.Spec.MinReplicas, 1);
-
-            Assert.Equal("/spec/minReplicas", patch.Operations.Single().path);
-        }
-    }
-}