* Remove unused 'group' argument
* Fix unit testing of cmd.mod_run_check without group arg
* Deprecate 'user/group' in cmd.run
* Deprecate 'user'/'group' in cmd.script
* Deprecate 'user' in cmd.wait
* Deprecate 'user'/'group' in cmd.wait_script
* Fix mod_run_check without 'group'
* Push deprecation back one release