Merge pull request #40848 from smarterclayton/serverside_get

Automatic merge from submit-queue (batch tested with PRs 46432, 46701, 46326, 40848, 46396)

Add a server side Get operation

Implement proposal kubernetes/community#363

```release-note
The Kubernetes API supports retrieving tabular output for API resources via a new mime-type `application/json;as=Table;v=v1alpha1;g=meta.k8s.io`.  The returned object (if the server supports it) will be of type `meta.k8s.io/v1alpha1` with `Table`, and contain column and row information related to the resource.  Each row will contain information about the resource - by default it will be the object metadata, but callers can add the `?includeObject=Object` query parameter and receive the full object.  In the future kubectl will use this to retrieve the results of `kubectl get`.
```

hack/lib/util.sh

@@ -334,6 +334,12 @@ kube::util::group-version-to-pkg-path() {
     meta/v1)
       echo "../vendor/k8s.io/apimachinery/pkg/apis/meta/v1"
       ;;
+    meta/v1alpha1)
+      echo "vendor/k8s.io/apimachinery/pkg/apis/meta/v1alpha1"
+      ;;
+    meta/v1alpha1)
+      echo "../vendor/k8s.io/apimachinery/pkg/apis/meta/v1alpha1"
+      ;;
     unversioned)
       echo "pkg/api/unversioned"
       ;;

hack/update-generated-swagger-docs.sh

@@ -28,7 +28,7 @@ source "${KUBE_ROOT}/hack/lib/swagger.sh"
 
 kube::golang::setup_env
 
-GROUP_VERSIONS=(meta/v1 ${KUBE_AVAILABLE_GROUP_VERSIONS})
+GROUP_VERSIONS=(meta/v1 meta/v1alpha1 ${KUBE_AVAILABLE_GROUP_VERSIONS})
 
 # To avoid compile errors, remove the currently existing files.
 for group_version in "${GROUP_VERSIONS[@]}"; do