Add pre-commit
diff --git a/hack/stack.sh b/hack/stack.sh
index 497b29a..4876c88 100755
--- a/hack/stack.sh
+++ b/hack/stack.sh
@@ -36,7 +36,7 @@
 SWIFT_REPLICAS=1
 enable_plugin neutron https://opendev.org/openstack/neutron
 #swift
-enable_service s-proxy s-object s-container s-account 
+enable_service s-proxy s-object s-container s-account
 # Cinder
 enable_service c-bak
 [[post-config|/etc/neutron/neutron.conf]]