📖 docs:samples:cronjob: change makefile to generate the CRD without d…

…escription to allow apply CRDs (#4075)

docs:samples:cronjob: fix makefile to generate the CRD with less description

docs/book/src/cronjob-tutorial/testdata/project/Makefile

@@ -45,7 +45,11 @@ help: ## Display this help.
 
 .PHONY: manifests
 manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
-	$(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+	# Note that the option maxDescLen=0 was added in the default scaffold in order to sort out the issue
+	# Too long: must have at most 262144 bytes. By using kubectl apply to create / update resources an annotation
+	# is created by K8s API to store the latest version of the resource ( kubectl.kubernetes.io/last-applied-configuration).
+	# However, it has a size limit and if the CRD is too big with so many long descriptions as this one it will cause the failure.
+	$(CONTROLLER_GEN) rbac:roleName=manager-role crd:maxDescLen=0 webhook paths="./..." output:crd:artifacts:config=config/crd/bases
 
 .PHONY: generate
 generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.