Perform header check in both makefiles (#153)

- No change in CI, but this makes it easier to catch missing headers in the generator files before opening PRs.

Makefile

@@ -73,10 +73,6 @@ fmt: ## Run go fmt against code
 vet: ## Run go vet against code
 	$(GO) vet ./...
 
-.PHONY: header-check
-header-check: ## Runs header checks on all files to verify boilerplate
-	./scripts/verify_boilerplate.sh
-
 .PHONY: tidy
 tidy: ## Runs go mod to ensure tidy.
 	$(GO) mod tidy

hack/generator/Makefile

@@ -12,7 +12,7 @@ V = 0
 Q = $(if $(filter 1,$V),,@)
 
 .PHONY: all
-all: build test
+all: header-check build test
 
 .PHONY: manifests
 manifests: $(CONTROLLER_GEN)

tools.mk

@@ -1,6 +1,7 @@
 # Directories.
 ROOT_DIR        :=$(shell git rev-parse --show-toplevel)
 TOOLS_DIR       = $(abspath $(ROOT_DIR)/hack/tools)
+SCRIPTS_DIR     = $(abspath $(ROOT_DIR)/scripts)
 TOOLS_BIN_DIR   = $(TOOLS_DIR)/bin
 
 GO_INSTALL      = $(abspath $(ROOT_DIR)/scripts/go_install.sh)
@@ -39,6 +40,9 @@ $(GOLANGCI_LINT): ## Build golangci-lint from tools folder.
 	echo $(ROOT_DIR)
 	GOBIN=$(TOOLS_BIN_DIR) $(GO_INSTALL) github.com/golangci/golangci-lint/cmd/golangci-lint@v1.26.0
 
+.PHONY: header-check
+header-check: ## Runs header checks on all files to verify boilerplate
+	$(SCRIPTS_DIR)/verify_boilerplate.sh
 
 # TODO: are these used?
 $(GOLINT): ## Build golint