Polish prepare/ansible documentation

[happz]

Includes added pyright cover, two birds with one stone.

Pull Request Checklist

• implement the feature

[martinhoyer]

looks good to me

[psss]

Looks nice, thanks! Just two nitpicks.

[qcheng-redhat]

LGTM.

[martinhoyer]

The docs look good to me, just a semi-related question - Shouldn't tmt have ansible as a dependency in some form? afaik, it will only be installed as part of provision-virtual or provision-container optional extras packages. Then there is the PyPI package.
Maybe at least it should be mentioned in the docs with "make sure you have ansible installed" or something

[psss]

Shouldn't tmt have ansible as a dependency in some form? afaik, it will only be installed as part of provision-virtual or provision-container optional extras packages.

Good point! The cleanest way would probably be to require ansible from tmt+prepare-ansible subpackage as we don't want to install ansible with the minimal tmt package, right?

[happz]

Shouldn't tmt have ansible as a dependency in some form? afaik, it will only be installed as part of provision-virtual or provision-container optional extras packages.

Good point! The cleanest way would probably be to require ansible from tmt+prepare-ansible subpackage as we don't want to install ansible with the minimal tmt package, right?

And tmt+finish-ansible...

[psss]

Test failures are irrelevant --> merging.