add v1 tests to hack/test-go; let default value of Container.SecurityContext to be nil

cmd/integration/integration.go

@@ -623,6 +623,23 @@ func runPatchTest(c *client.Client) {
 				[]byte(`{"metadata":{"labels":{"$patch":"replace"}}}`),
 			},
 		},
+		"v1": {
+			api.JSONPatchType: {
+				[]byte(`[{"op":"add","path":"/metadata/labels","value":{"foo":"bar","baz":"qux"}}]`),
+				[]byte(`[{"op":"remove","path":"/metadata/labels/foo"}]`),
+				[]byte(`[{"op":"remove","path":"/metadata/labels"}]`),
+			},
+			api.MergePatchType: {
+				[]byte(`{"metadata":{"labels":{"foo":"bar","baz":"qux"}}}`),
+				[]byte(`{"metadata":{"labels":{"foo":null}}}`),
+				[]byte(`{"metadata":{"labels":null}}`),
+			},
+			api.StrategicMergePatchType: {
+				[]byte(`{"metadata":{"labels":{"foo":"bar","baz":"qux"}}}`),
+				[]byte(`{"metadata":{"labels":{"foo":null}}}`),
+				[]byte(`{"metadata":{"labels":{"$patch":"replace"}}}`),
+			},
+		},
 	}
 
 	pb := patchBodies[c.APIVersion()]

cmd/integration/v1-controller.json

@@ -0,0 +1,24 @@
+{
+  "kind": "ReplicationController",
+  "apiVersion": "v1",
+  "metadata": {
+     "name": "nginx-controller",
+     "labels": {"name": "nginx"}
+  },
+  "spec": {
+    "replicas": 2,
+    "selector": {"name": "nginx"},
+    "template": {
+       "metadata": {
+          "labels": {"name": "nginx"}
+       },
+       "spec": {
+           "containers": [{
+             "name": "nginx",
+             "image": "nginx",
+             "ports": [{"containerPort": 80}]
+           }]
+       }
+    }
+  }
+}