ConfigurationComposite module is not used for bootstrap serialization

Visibility rules say that the Module of the Entity declaration will be used to locate the EntityStore to be used. This is also true for ConfigurationComposites, since they are a subtype of EntityComposite.

However, when the ConfigurationComposite is bootstrapped from some external source, such as JSON file, the Deserializer to be used is not what is visible from the ConfigurationComposite, but from the ServiceComposite. This is not consistent and should be fixed.