Fix validate-manifest task (#1831)

Makefile

@@ -238,24 +238,23 @@ generate: ${GO_SOURCES} ## Generate code
 	controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./pkg/..."
 	$(MAKE) fmt
 
-FILES = $(shell git ls-files -o -m --directory --exclude-standard --no-empty-directory)
-TEMP := $(shell echo "$(FILES)" | awk 'NF')
-LINES := $(shell echo "$(FILES)" | awk -F=' ' "{ print NF }")
-check-missing-files:  ## Check autogenerated runtime objects and manifest files are missing
-	@echo "Checking autogenerated runtime objects and manifests"
-	@echo "============================================"
-ifneq ("$(LINES)","0")
-	@echo "Detected files that need to be committed:"
-	@echo "$(FILES)" | sed -e "s/^/  /"
-	@echo ""
-	@echo "Try running: make generate manifests"
-	@exit 1
+.PHONY: check-missing-files
+check-missing-files: ## Check autogenerated runtime objects and manifest files are missing
+	$(info Checking autogenerated runtime objects and manifests)
+	$(info ============================================)
+ifneq ($(shell git ls-files -o -m --directory --exclude-standard --no-empty-directory),)
+	$(info Detected files that need to be committed:)
+	$(info $(shell git ls-files -o -m --directory --exclude-standard --no-empty-directory | sed -e "s/^/  /"))
+	$(info )
+	$(info Try running: make generate manifests)
+	$(error Check: FAILED)
+else
+	$(info Check: PASS)
 endif
-	@echo "--------------------"
-	@echo "Check: PASS"
 
 .PHONY: validate-manifests
-validate-manifests: generate manifests check-missing-files
+validate-manifests: generate manifests
+	$(MAKE) check-missing-files
 
 
 .PHONY: bundle