Use hack/boilerplate.go.txt from root and remove duplication

Author: camilamacedo86

catalogd/Makefile

@@ -69,7 +69,7 @@ clean: ## Remove binaries and test artifacts
 
 .PHONY: generate
 generate: $(CONTROLLER_GEN) ## Generate code and manifests.
-	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."
+	$(CONTROLLER_GEN) object:headerFile="../hack/boilerplate.go.txt" paths="./..."
 	$(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/base/crd/bases output:rbac:artifacts:config=config/base/rbac output:webhook:artifacts:config=config/base/manager/webhook/
 
 .PHONY: bingo-upgrade