Gets whether a
OperationContext.Stage#RUNTIME handler should be added. This default implementation
returns true if the process is a
OperationContext#isNormalServer() and the process
OperationContext#isBooting(). The rationale for the latter check is if the process is
booting, the resource being modified will have been added as a previous step in the same context, and
the Stage.RUNTIME handling for that add will see a model the reflects the changes made by this handler and
will apply them to the runtime.