Support alias of `kubectl`

[KristianZH]

Now a days a lot of users use k instead of kubectl. Unfortunatelly the auto-completion does not work with k notation.

[evanlucas]

Ah, that is actually a fish limitation as far as I understand. I use kc and it works if you define a function for it like so:

function kc --wraps kubectl -d 'kubectl shorthand'
  kubectl $argv
end

[aca]

Fish has 'abbr' which replaces alias. It's feature I love most. You might try it.

abbr --global k 'kubectl'
abbr --global ka 'kubectl apply'
abbr --global kd 'kubectl describe'
abbr --global kg 'kubectl get'