Jarek Radosz 451cd4ec3f
DEV: Fix thor deprecation warning (#14680)
```
Deprecation warning: Thor exit with status 0 on errors. To keep this behavior, you must define `exit_on_failure?` in `DiscourseCLI`
```
2021-10-21 21:01:05 +02:00
..
2019-05-22 12:28:17 +10:00
2020-06-01 05:50:49 +02:00