use check_mode instead of always_run

[afeld]

Deprecated as of Ansible 2.2.

TASK [silpion.util : Register SELinux state] ***********************************
[DEPRECATION WARNING]: always_run is deprecated. Use check_mode = no instead..
This feature will be
 removed in version 2.4. Deprecation warnings can be disabled by setting deprecation_warnings=False
 in ansible.cfg.

ansible/ansible-lint#220

Also, Issues seem to be disabled on this repository, but I have a few I would like to open. Would you be willing to enable them?

[afeld]

@spul Bump!