[ModuleCatalog] Add .spec.associatedResources to ModuleTemplate

[c-pius]

Description

In #1681 it has been decided to add info about resources associated to a module to ModuleTemplates. We need to update the ModuleTemplate to include this information.

The information shall look as follows:

spec:
  associatedResources:
  - group: networking.istio.io
    version: v1alpha3
    kind: gateways
  - group: networking.istio.io
    version: v1alpha3
    kind: virtualservices

.spec.associatedResources is OPTIONAL (for compatibility reasons). The items in an individual entry are REQUIRED. It should be checked whether existing K8s types and validations can be re-used.

Reasons

Enables CLI and dashboard to show a message about what resources must be cleaned when uninstalling a module.

Acceptance Criteria

• re-used K8s types if possible
• .spec.associatedResources added to ModuleTemplate
• Added an entry to Modularization API Upgrade #776 that spec.associatedResources must be added as required in a future major API version

Feature Testing

No response

Testing approach

No response

Attachments

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