update makefile

Makefile

@@ -51,6 +51,7 @@ lint: install-build-requirements
 
 generate: clean-proto install-build-requirements
 	find $(PROTO_FILES_DIR) -name '*.proto' -exec python3 -m grpc_tools.protoc -I${PROTO_FILES_DIR} --python_out=$(OUTPUT_FILES_DIR) --grpc_python_out=$(OUTPUT_FILES_DIR) {} +
+	python fix_imports.py
 
 dist: clean generate
 	python setup.py sdist
@@ -62,4 +63,3 @@ release: dist
 
 install: clean generate install-requirements
 	python setup.py install
-	python fix_imports.py