sysrc: refactor (#10417)
* sysrc: refactor
* sysrc: refactor changelog fragment
* sysrc: forgot the os import
* sysrc: update test to edit the correct file
* sysrc: Added copyright info to the test conf file
* sysrc: Added full copyright info to the test conf file
* sysrc: Detect permission denied when using sysrc
* sysrc: Fixed the permission check and 2.7 compatibility
* sysrc: Fix typo of import
* sysrc: Fix err.find check
* sysrc: Add bugfixes changelog fragment
* sysrc: Use `StateModuleHelper`
* sysrc: updated imports
* sysrc: remove re import and set errno.EACCES on the OSError
* sysrc: format code properly
* sysrc: fix Python 2.7 compatibility and set changed manually
* sysrc: add missing name format check
Also use `self.module.fail_json` through out
* sysrc: Removed os import by accident
* sysrc: updated per review, and the way the existing value is retrieved
(cherry picked from commit 44ca366173)
Co-authored-by: David Lundgren <dlundgren@syberisle.net>
