Added some doc string explaining the purpose of _SubParserActionOverride in leapp.utils.clicmd
Added some doc string explaining the purpose of _SubParserActionOverride in leapp.utils.clicmd

leapp-to/prototype,vinzenz/prototype,leapp-to/prototype,leapp-to/prototype,vinzenz/prototype,vinzenz/prototype,leapp-to/prototype,vinzenz/prototype