Use code-generator to generate clientset/informer/lister (#1492)

To reduce maintenance effort and avoid writing duplicate informer code,
use code-generator to generate clientset/informer/lister code.

pkg/apis/fission.io/v1/doc.go

@@ -17,13 +17,13 @@ limitations under the License.
 // This file tells deepcopy-gen to generate deepcopy methods for all structs in the package.
 // For more details, please visit https://blog.openshift.com/kubernetes-deep-dive-code-generation-customresources/
 
-// +k8s:deepcopy-gen=package
+// +k8s:deepcopy-gen=package,register
 // +k8s:defaulter-gen=TypeMeta
 // +groupName=fission.io
+// +groupGoName=V1
 package v1
 
 const (
-	CRD_VERSION = "fission.io/v1"
-
+	CRD_VERSION          = "fission.io/v1"
 	CRD_NAME_ENVIRONMENT = "Environment"
 )