* added password prompt support for machinectl
* include review comments
This includes the review comments as well as changelog fragment. This also gives more information about the polkit rule.
* fix yaml doc with leftover bracket
* include review comments 2
* move regex compile to global scope
* Fix become plugins.
* Fix become unit tests to avoid play_context.make_become_cmd.
* Remove hack.
* Remove explicit defaults. Adjust tests to be more like Ansible itself.
* Forgot two lines.
* Rewrite tests (again).
* Rename play_context -> task, add possibility to pass var_options.
* Add var_options variants.
* Properly test overwriting.