Add fix for CRD schema (#102)

- Upgraded the controller-gen binary
- Regenerated the CRD to comply with v1.18 schema, issues described in
kubernetes/kubernetes#91395

Makefile

@@ -138,7 +138,7 @@ ifeq (, $(shell which controller-gen))
 	CONTROLLER_GEN_TMP_DIR=$$(mktemp -d) ;\
 	cd $$CONTROLLER_GEN_TMP_DIR ;\
 	go mod init tmp ;\
-	go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.5 ;\
+	go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.5.0 ;\
 	rm -rf $$CONTROLLER_GEN_TMP_DIR ;\
 	}
 CONTROLLER_GEN=$(GOBIN)/controller-gen

README.md

@@ -6,7 +6,11 @@ Kubernetes operator that creates and manages Redis HA clustered databases - [Red
 ### Using the operator on a local cluster
 
 The project uses a [kind](https://kind.sigs.k8s.io/docs/user/quick-start/) cluster for development and test purposes.
-Current `kind` version: [v0.10.0](https://github.com/kubernetes-sigs/kind/releases/tag/v0.10.0)
+
+Requirements:
+
+* `kind`: [v0.10.0](https://github.com/kubernetes-sigs/kind/releases/tag/v0.10.0)
+* `controller-gen` > 0.4
 
 **1. Setting up a cluster**