fixes a few places where the api-discovery is missed

Author: yue9944882

extended/src/main/java/io/kubernetes/client/extended/kubectl/KubectlCordon.java

@@ -34,6 +34,7 @@ public class KubectlCordon extends Kubectl.ResourceBuilder<V1Node, KubectlCordon
 
   @Override
   public V1Node execute() throws KubectlException {
+    refreshDiscovery();
     return performCordon();
   }
 

extended/src/main/java/io/kubernetes/client/extended/kubectl/KubectlGet.java

@@ -57,6 +57,8 @@ public KubectlGetSingle name(String name) {
 
   @Override
   public List<ApiType> execute() throws KubectlException {
+    refreshDiscovery();
+
     GenericKubernetesApi<ApiType, ? extends KubernetesListObject> api =
         apiTypeListClass == null
             ? getGenericApi(apiTypeClass)

extended/src/main/java/io/kubernetes/client/extended/kubectl/KubectlPatch.java

@@ -41,6 +41,8 @@ public KubectlPatch patchType(String patchType) {
 
   @Override
   public ApiType execute() throws KubectlException {
+    refreshDiscovery();
+
     GenericKubernetesApi genericKubernetesApi = getGenericApi();
     if (ModelMapper.isNamespaced(apiTypeClass)) {
       return (ApiType) genericKubernetesApi.patch(namespace, name, patchType, patchContent);