SynchServerOperation pulls down more config than necessary during slave reconnection to DC

When a slave disconnects and reconnects to the DC for the first time, a complete copy of the domain config is sent. If the slave is using the default ignore-unused-configuration semantics, it still adds all of the additional configuration.

An additional side issue is the full-ha subsystems are being added in reverse order.

More detail in comments here https://github.com/wildfly/wildfly-core/pull/1754.