Changing multicast address in JGroups socket-binding does not trigger server to set reload-required

Found this by accident when debugging a clustering test case.
If I start a server with profile standalone-full-ha and then modify the multicast address of a clustering related socket-binding, in this case, jgroups-mping, the server is not put into state reload-required.
This causes a lot of problems in the testsuite which depends on configuring servers after startup and then restarting if necessary to pull in the changes.