[1108833] Enabling LDAP on one JBoss ON Server in HA Configuration is not propagated to another server(s) until their restart so the users cannot log in
Enable/Disable of LDAP requires a system reconfigure (reinstall the JAAS
login modules...). Change things such that the system reconfigure gets
performed whenever HA nodes detect a change in system settings. So,
this fix is a bit more general that the specific case listed here.  The
system settings update check is every 60s, so HA nodes should pick up
a change within a minute.