Just because Consul gives us a 404 this doesn't guarantee the KV doesn't
exist, it doesn't even mean we don't have access to it. Furthermore we
should never destroyRecord's without user interaction (therefore only via the
repo.delete method).
This switches destroyRecord to unloadRecord which performs the
additional legwork to keep ember-data in sync with the actual truth.
unloadRecord unloads the record from ember-data rather than sending an API
delete request, which would have been the intent here.
Repositories are a class of services to help with CRUD actions, most of
the functionality is reused across various Models. This creates a new
repository service that centralizes all this reused functionality.
Inheritance via ember `Service.extend` is used as opposed to
decorating via Mixins.
1. Move all repository services (and their tests) to a
services/repository folder
2. Standardize on a singular name format 'node vs nodes'
3. Create a new 'repository' service to centralize functionality. This
should be extended by 'repository' services
