Using the "User.Auth.*" configuration keys, it is possible to change hardcoded configurations such as loginAction from the bootstrap for instance.
Modified the AclFilter component to allow custom Auth configs
In 1.4, you can already plug your own Acl. I think this now superseeded by that feature.
This PR was for the 1.3 branch initially. It can be ignored if as you say the 1.4 version will allow it out of the box (I have not tried it yet) and no maintenance is planned on the 1.3 branch.
Closing this PR since it was implemented in 1.4