Replace usage of setup-envtest.sh with setup-envtest binary.

Upstream has replaced the shell script with a single binary. See
kubernetes-sigs/controller-runtime#1488 for more
information.

Author: yjwong

Makefile

@@ -85,10 +85,11 @@ vet: ## Run go vet against code.
 	go vet ./...
 
 ENVTEST_ASSETS_DIR=$(shell pwd)/testbin
+SETUP_ENVTEST = $(shell pwd)/bin/setup-envtest
 test: manifests generate fmt vet ## Run tests.
 	mkdir -p ${ENVTEST_ASSETS_DIR}
-	test -f ${ENVTEST_ASSETS_DIR}/setup-envtest.sh || curl -sSLo ${ENVTEST_ASSETS_DIR}/setup-envtest.sh https://raw.githubusercontent.com/kubernetes-sigs/controller-runtime/v0.11.1/hack/setup-envtest.sh
-	source ${ENVTEST_ASSETS_DIR}/setup-envtest.sh; fetch_envtest_tools $(ENVTEST_ASSETS_DIR); setup_envtest_env $(ENVTEST_ASSETS_DIR); go test ./... -coverprofile cover.out
+	$(call go-get-tool,$(SETUP_ENVTEST),sigs.k8s.io/controller-runtime/tools/setup-envtest@latest)
+	source <($(SETUP_ENVTEST) use --bin-dir $(ENVTEST_ASSETS_DIR) -p env); go test ./... -coverprofile cover.out
 
 ##@ Build