puppet_utils: Add option to set LANG for puppet execution
Add option `environment_lang` to force the LANG when executing the
puppet agent. The default is the `C` LANG
* Add Puppet skip_tags option
* Include changelog fragment
* Apply suggestions from code review
Co-authored-by: Felix Fontein <felix@fontein.de>
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Co-authored-by: Felix Fontein <felix@fontein.de>