Figure out whether the Reifier substitutions can be added conditionally

[ppalaga]

@gnodet added these substitutions in his Camel 3.0.0-M3 workign branch. I had to remove them to make the core-cdi itest pass. We should figure out whether they can be added conditionally using com.oracle.svm.core.annotate.TargetClass.onlyWith

@TargetClass(className = "org.apache.camel.reifier.ProcessorReifier")
final class Target_org_apache_camel_reifier_ProcessorReifier {

    @Alias
    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
    private static Map<Class<?>, Function<ProcessorDefinition<?>, ProcessorReifier<? extends ProcessorDefinition<?>>>> PROCESSORS = null;

}

@TargetClass(className = "org.apache.camel.reifier.dataformat.DataFormatReifier")
final class Target_org_apache_camel_reifier_dataformat_DataFormatReifier {

    @Alias
    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
    private static Map<Class<?>, Function<DataFormatDefinition, DataFormatReifier<? extends DataFormatDefinition>>> DATAFORMATS = null;

}

@TargetClass(className = "org.apache.camel.reifier.loadbalancer.LoadBalancerReifier")
final class Target_org_apache_camel_reifier_loadbalancer_LoadBalancerReifier {

    @Alias
    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
    private static Map<Class<?>, Function<LoadBalancerDefinition, LoadBalancerReifier<? extends LoadBalancerDefinition>>> LOAD_BALANCERS = null;

}

@TargetClass(className = "org.apache.camel.reifier.transformer.TransformerReifier")
final class Target_org_apache_camel_reifier_transformer_TransformerReifier {

    @Alias
    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
    private static Map<Class<?>, Function<TransformerDefinition, TransformerReifier<? extends TransformerDefinition>>> TRANSFORMERS = null;

}

@TargetClass(className = "org.apache.camel.reifier.validator.ValidatorReifier")
final class Target_org_apache_camel_reifier_validator_ValidatorReifier {

    @Alias
    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias)
    private static Map<Class<?>, Function<ValidatorDefinition, ValidatorReifier<? extends ValidatorDefinition>>> VALIDATORS = null;

}