display smart management attribute on subscriptions and content hosts
Some subscriptions have a "smart management" attribute which, by terms of service, allows them to be managed by Satellite-6 (katello). This attribute should be available for viewing and querying.
+ Content Host / Details - Subscriptions section: Smart Management Enabled: Yes/No (non editable)
+ Subscription / Details - Subscription Info section: Smart Management Enabled: Yes/No (non editable)
Should be searchable in both content host and subscriptions