katello-change-hostname should should remove last_scenario.yml only after success of installer
|Target version:||Team Brad - Backlog|
|Velocity based estimate||-|
|Release||Katello Backlog||Release relationship||Auto|
If for some reason re-running the installer within k-c-h fails, user is left without last_scenario.yml, and possible remedies such as foreman-installer --upgrade or --reset won't work. The script could rename the last_scenario.yml so that it is not used in the installer run and delete/restore it based on installer result.