Generate api information in OpenAPI model and register types to scheme (

#733)

* Add a function to register api group and add type to scheme

Signed-off-by: JetMuffin <mofeng.cj@alibaba-inc.com>

* apply goimports -w to install.go

Signed-off-by: JetMuffin <mofeng.cj@alibaba-inc.com>

* generate api information inf openapi model.

Signed-off-by: JetMuffin <mofeng.cj@alibaba-inc.com>

hack/update-codegen.sh

@@ -43,5 +43,5 @@ ${GOPATH}/bin/defaulter-gen  --input-dirs github.com/kubeflow/tf-operator/pkg/ap
 cd - > /dev/null
 
 echo "Generating OpenAPI specification for v1alpha2"
-${GOPATH}/bin/openapi-gen --input-dirs github.com/kubeflow/tf-operator/pkg/apis/tensorflow/v1alpha2,k8s.io/api/core/v1 --output-package github.com/kubeflow/tf-operator/pkg/apis/tensorflow/v1alpha2 --go-header-file hack/boilerplate/boilerplate.go.txt "$@"
+${GOPATH}/bin/openapi-gen --input-dirs github.com/kubeflow/tf-operator/pkg/apis/tensorflow/v1alpha2,k8s.io/api/core/v1,k8s.io/apimachinery/pkg/apis/meta/v1,k8s.io/apimachinery/pkg/api/resource,k8s.io/apimachinery/pkg/runtime,k8s.io/apimachinery/pkg/util/intstr,k8s.io/apimachinery/pkg/version --output-package github.com/kubeflow/tf-operator/pkg/apis/tensorflow/v1alpha2 --go-header-file hack/boilerplate/boilerplate.go.txt "$@"
 cd - > /dev/null

pkg/apis/tensorflow/v1alpha2/install.go

@@ -0,0 +1,22 @@
+package v1alpha2
+
+import (
+	"k8s.io/apimachinery/pkg/apimachinery/announced"
+	"k8s.io/apimachinery/pkg/apimachinery/registered"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/util/sets"
+)
+
+// Install registers the API group and adds type to a schema
+func Install(groupFactoryRegister announced.APIGroupFactoryRegistry, registry *registered.APIRegistrationManager, scheme *runtime.Scheme) error {
+	return announced.NewGroupMetaFactory(
+		&announced.GroupMetaFactoryArgs{
+			GroupName:              GroupName,
+			RootScopedKinds:        sets.NewString(),
+			VersionPreferenceOrder: []string{SchemeGroupVersion.Version},
+		},
+		announced.VersionToSchemeFunc{
+			SchemeGroupVersion.Version: AddToScheme,
+		},
+	).Announce(groupFactoryRegister).RegisterAndEnable(registry, scheme)
+}