Makefile: fix bundle to be able to be built more than once

Author: hj-johannes-lee

Makefile

@@ -116,6 +116,7 @@ build: $(cmds)
 
 .PHONY: bundle
 bundle:
+	rm -rf $(BUNDLE_DIR)
 	mkdir -p $(BUNDLE_DIR)
 	$(OPERATOR_SDK) generate kustomize manifests -q --input-dir $(OLM_MANIFESTS) --output-dir $(OLM_MANIFESTS) --apis-dir pkg/apis
 	$(KUSTOMIZE) build $(OLM_MANIFESTS) | sed "s|intel-deviceplugin-operator:devel|intel-deviceplugin-operator:$(OPERATOR_VERSION)|" | $(OPERATOR_SDK) generate bundle -q --overwrite --kustomize-dir $(OLM_MANIFESTS) --version $(OPERATOR_VERSION) $(BUNDLE_METADATA_OPTS) --output-dir .