Add kustomize to Makefile

hack/ci/Makefile

@@ -1,6 +1,22 @@
+## Tool Binary
+KUSTOMIZE ?= $(LOCALBIN)/kustomize
+## Tool Version
+KUSTOMIZE_VERSION ?= v5.0.0
+
+KUSTOMIZE_INSTALL_SCRIPT ?= "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"
+.PHONY: kustomize
+kustomize: $(KUSTOMIZE) ## Download kustomize locally if necessary. If wrong version is installed, it will be removed before downloading.
+$(KUSTOMIZE): $(LOCALBIN)
+	@if test -x $(LOCALBIN)/kustomize && ! $(LOCALBIN)/kustomize version | grep -q $(KUSTOMIZE_VERSION); then \
+		echo "$(LOCALBIN)/kustomize version is not expected $(KUSTOMIZE_VERSION). Removing it before installing."; \
+		rm -rf $(LOCALBIN)/kustomize; \
+	fi
+	test -s $(LOCALBIN)/kustomize || { curl -Ss $(KUSTOMIZE_INSTALL_SCRIPT) --output install_kustomize.sh && bash install_kustomize.sh $(subst v,,$(KUSTOMIZE_VERSION)) $(LOCALBIN); rm install_kustomize.sh; }
+
+
 .PHONY: install-eventing-manager
-install-eventing-manager: ## Install CRDs into the K8s cluster specified in ~/.kube/config.
-	kubectl apply -k ./../e2e/config/
+install-eventing-manager: kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
+	$(KUSTOMIZE) build ./../e2e/config | kubectl apply -f -
 
 .PHONY: install-k3d-tools
 install-k3d-tools: ## Create k3d with kyma CRDs.