CARRY: Makefile: add merge-bot and generate-openshift targets

We need theses targets so merge-bot target can run it.

Author: EmilienM

Makefile

@@ -272,6 +272,19 @@ modules: ## Runs go mod to ensure proper vendoring.
 	go mod tidy
 	cd $(TOOLS_DIR); go mod tidy
 
+.PHONY: merge-bot
+merge-bot: full-vendoring generate generate-openshift ## Runs targets that help merge-bot to rebase downstream CAPO.
+
+.PHONY: full-vendoring
+full-vendoring: ## Runs commands that complete vendoring tasks for downstream CAPO.
+	go mod tidy && go mod vendor
+	cd $(TOOLS_DIR); go mod tidy; go mod vendor
+	cd $(REPO_ROOT)/openshift; go mod tidy; go mod vendor
+
+.PHONY: generate-openshift
+generate-openshift:
+	$(MAKE) -C $(REPO_ROOT)/openshift generate
+
 .PHONY: generate
 generate: templates generate-controller-gen generate-codegen generate-conversion-gen generate-go generate-manifests generate-api-docs ## Generate all generated code