The `rollback-soft` feature was implemented in T5249.
It is time to think of renaming the features; we currently have `rollback` (with reboot) and `rollback-soft` (without rebooting)
- Proposed for renaming:
```
rollback => rollback-hard
rollback-soft => rollback
```
I.e. after refactoring:
```
rollback Rollback to a prior config revision (without reboot)
rollback-hard Rollback to a prior config revision (requires reboot)
```
- Another idea would be to get rid of the old `rollback` which requires a reboot. As it is completely useless.
I think we can start with the first option.