[AS7-6334] jsf subsystem resource transformation

* discard the jsf subsystem resource from the legacy version only if
  its slot value is undefined or the default value.
* in HostControllerRegistrationHandler, check for the outcome of the
  read-master-domain-model which may fail (as is the case when the jsf subsystem
  has a non-default slot and is transformed for a legacy controller)

I manually checked the fix using the test suite/mixed-domain tests.