Try to avoid - in the name of directives

[jkonecny12]

I noticed that there are multiple commands using - to support two versions of the same thing. I think it would give more sense to change this based on the argument passed in.

Example:
filesystem.boot-efi => filesystem.boot.efi = True
filesystem.boot => would default to filesystem.boot.efi = False

external.osbuild.depsolve-dnf4 => external.osbuild.depsolve.dnf4 = True
external.osbuild.depsolve-dnf4 => external.osbuild.depsolve.dnf4 = False

On the same note, please switch using from - to _. Please are more used to this with Ansible, so it wouldn't be confusing. In general I think this project should try to get closest as possible to Ansible.

[supakeen]

As far as the - goes in the depsolves. I'm kind of projecting a hierarchical structure on the dot notations; which I maybe shouldn't do.

I'm open to default to _ instead of - in directive names.