WFLY-3903 Change CSIv2IORInterceptor to use the IOR settings defined in ...

...the jacorb subsystem by default

JIra reference: https://issues.jboss.org/browse/WFLY-3903
Since IORSecConfigMetaDataService.getCurrent() uses

     return (IORSecurityConfigMetaData) currentServiceContainer().getRequiredService(SERVICE_NAME).getValue();

I don't see how this can be null. getRequiredService() throws a ServiceNotFoundException if null