kubernetes: Add barebones argument checking to subcommands.
kubernetes: Add barebones argument checking to subcommands.

metakirby5/.dots,metakirby5/.dots,metakirby5/dotfiles,metakirby5/dotfiles,metakirby5/.dots,metakirby5/dotfiles,metakirby5/.dots,metakirby5/dotfiles,metakirby5/.dots