Add instance_config_version to all resources schema

[claudia-correia]

Overview

All topology elements now contain an instance_configuration_version field. We should add this field to the schema. Also, it is now possible to use different instance_configuration_ids from the ones defined in the deployment template. So, we should make the necessary changes so that it's possible to set the instance_configuration_id for all resources.

Testing

We should test the following:

1. The instance_configuration_id and instance_configuration_version fields can be read and updated for all resources.
2. It's possible to use an instance_configuration_id different from the one in the template.

Context

We currently can't specify an instance_configuration_version, which forces us to use the instance_configuration_versions defined in the template. The same goes for the instance_configuration_id, which currently can't be different from the ones in the template, which blocks us from using different hardware types for specific resources/ES tiers.