I have the exact same problem as described in the below post, but I don't know how to implement the solution with the 5.3 branch of the cas-management-overlay. I can't seem to figure out where to add the absolute-ordering tag (in web.xml) and what names to put in it. My web.xml just has a couple of servlets and a bunch of mime-mapping. Most of the solutions I've seen for this seem to be people writing their own stuff.
Also, I'm not sure if the conflict is internal to this overlay or if it's between the spring version of CAS and CAS managment. They both show different different spring versions in pom.xml. I tried making them the same and building, but it didn't work.
I'd appreciate any suggestions that might point me in the right direction.