Add 'acl' package to neutron deps

The acl package has been added as a test-only dependency of neutron.
It is used by the functional job in configuring postgres.

Change-Id: Ie28da793237b51cced3bd0a9b35273d9c50472e8
diff --git a/files/rpms/neutron b/files/rpms/neutron
index f2473fb..5450408 100644
--- a/files/rpms/neutron
+++ b/files/rpms/neutron
@@ -1,4 +1,5 @@
 MySQL-python
+acl     # testonly
 dnsmasq # for q-dhcp
 dnsmasq-utils # for dhcp_release
 ebtables