.Currently we added a new SpaRenderableDefinition and an impl in order to accommodate both pages with jcr and pages with norsu. The only diff is the TemplateAvailability implementation that needs to be different for the pages apps.

AC:
  Remove the norsu specific SpaRenderableDefinition to allow for a smoother migration 

Developer notes

1. Inject a provider of TemplateAvailability
2. Impl a smart provider of TemplateAvailability that takes into consideration the norsu feature flag
3. overwrite the module descriptor of the pages-with-norsu to inject that provider