Makefile silence failing version checks (#1458)

If the respective binaries aren't available in '$PATH', this will no longer be printed out. Due to the way Makefiles work, this would have been printed even when using targets that don't depend on these version checks (e.g. when running 'make cli-fast').

Signed-off-by: Jan Schlicht <jan@d2iq.com>

Makefile

@@ -48,7 +48,7 @@ test-clean:
 
 .PHONY: lint
 lint:
-ifneq (${GOLANGCI_LINT_VER}, "$(shell golangci-lint --version | cut -b 27-32)")
+ifneq (${GOLANGCI_LINT_VER}, "$(shell golangci-lint --version 2>/dev/null | cut -b 27-32)")
 	./hack/install-golangcilint.sh
 endif
 	golangci-lint run
@@ -95,8 +95,8 @@ deploy-clean:
 .PHONY: generate
 # Generate code
 generate:
-ifneq ($(shell go list -f '{{.Version}}' -m sigs.k8s.io/controller-tools), $(shell controller-gen --version | cut -b 10-))
-	@echo "(Re-)installing controller-gen. Current version:  $(controller-gen --version | cut -b 10-). Need $(go list -f '{{.Version}}' -m sigs.k8s.io/controller-tools)"
+ifneq ($(shell go list -f '{{.Version}}' -m sigs.k8s.io/controller-tools), $(shell controller-gen --version 2>/dev/null | cut -b 10-))
+	@echo "(Re-)installing controller-gen. Current version:  $(controller-gen --version 2>/dev/null | cut -b 10-). Need $(go list -f '{{.Version}}' -m sigs.k8s.io/controller-tools)"
 	go get sigs.k8s.io/controller-tools/cmd/controller-gen@$$(go list -f '{{.Version}}' -m sigs.k8s.io/controller-tools)
 endif
 	controller-gen crd paths=./pkg/apis/... output:crd:dir=config/crds output:stdout
@@ -148,7 +148,7 @@ docker-push:
 .PHONY: imports
 # used to update imports on project.  NOT a linter.
 imports:
-ifneq (${GOLANGCI_LINT_VER}, "$(shell golangci-lint --version | cut -b 27-32)")
+ifneq (${GOLANGCI_LINT_VER}, "$(shell golangci-lint --version 2>/dev/null | cut -b 27-32)")
 	./hack/install-golangcilint.sh
 endif
 	golangci-lint run --disable-all -E goimports --fix