THROWAWAY subsystem just to verify a few things
server group to profile and socket binding group registry on slave and master to ignore resources not set up in slave's server groups
Make core-model-test happier with the ignored domain registry
When changing server-group's socket-binding-group, put server into restart required if it was not overridden on the server (as was done for profile). If the requested profile or socket-binding-group does not exist on the slave put the slave into restart-required
Put host into reload-required if server group profile or socket-binding-group does not exist on server. Do the same if a server-config references a non-existant server-group or socket-biding-group