Removed the JsonIgnoreProperties that ignores the vxfref property

Closes #4 (moved)

src/main/java/org/etsi/osl/model/ConstituentVxF.java

@@ -33,7 +33,7 @@ import jakarta.persistence.OneToOne;
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
 @Entity(name = "ConstituentVxF")
-@JsonIgnoreProperties(value = { "vxfref"  })
+//@JsonIgnoreProperties(value = { "vxfref"  })
 public class ConstituentVxF {
 
 	@Id