fix: add v1beta1 to conversion config to work with 1.16+

Author: diafour

examples/210-conversion-webhook/.dockerignore

@@ -2,5 +2,4 @@ templates
 .helmignore
 Chart.yaml
 crontab*.yaml
-README.md
 values.yaml

pkg/webhook/conversion/crd_client_config.go

@@ -20,7 +20,7 @@ type CrdClientConfig struct {
 	CABundle    []byte
 }
 
-var SupportedConversionReviewVersions = []string{"v1"}
+var SupportedConversionReviewVersions = []string{"v1", "v1beta1"}
 
 func (c *CrdClientConfig) Update() error {
 	client := c.KubeClient

pkg/webhook/conversion/handler.go

@@ -70,6 +70,7 @@ func (h *WebhookHandler) ServeReviewRequest(w http.ResponseWriter, r *http.Reque
 }
 
 // See https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definition-versioning/#write-a-conversion-webhook-server
+// This code always response with v1 ConversionReview: it works for 1.16+.
 func (h *WebhookHandler) HandleReviewRequest(path string, body []byte) (*v1.ConversionReview, error) {
 	crdName := DetectCrdName(path)
 	log.Infof("Got ConversionReview request for crd/%s", crdName)