* Use balanced matrix based on `template-formula` guidelines
* Initial ref: https://github.com/saltstack-formulas/template-formula/issues/118
* Fedora still disabled due to existing errors:
  - `Job for chronyd.service failed because a timeout was exceeded.`

BREAKING CHANGE: `chrony.removed` replaced by `.clean` states.

* Run `chrony.config` as workaround
  - `.config` not called by `chrony`
* Disable `fedora` for the time being due to `systemd` issue
  - Refusing to accept PID outside of service control group,
    acquired through unsafe symlink chain: /var/run/chrony/chronyd.pid