I've tried upgrading aop to 2.1.5.GA in the latest Branch_5_x, but that now has a maven enforcer rule that bans any AS components in the group org.jboss.jbossas. Since asintegration-* has a dependency on those the Branch_5_x build failed, but I was able to get around that using an exclusion in AS component-matrix/pom.xml.
I have created https://jira.jboss.org/jira/browse/JBAOP-754 to investigate removing these dependencies further.
I think the only things needed are ServiceMBeanSupport for the main build, but when running the tests we need to add the other dependencies which should be fine.