Refactor facet base class to a concern.
|Assigned To:||Shimon Shtein|
|Target version:||Team Ivan Iteration 6|
|Found in release:||Pull request:||https://github.com/theforeman/foreman/pull/4047|
|Velocity based estimate||-|
We can leave the base class, but we want to leave the inheritance option open.
Example: In Katello there is a base class for all models, so we want to enable ContentFacet class to inherit the base Model and have all facet related methods.