Disabling tags on hotfix doesn't work

Referencing https://github.com/petervanderdoes/gitflow-avh/issues/362

I still cannot disable tagging on hotfix branch 

I have done:

```
git config --global gitflow.release.finish.notag true
git config --global gitflow.hotfix.finish.notag true
```

And it still asks for the tag name when finishing the hotfix. 