🐞 Install k8s worker: set up cunnie's .zshrc
🐞 Install k8s worker: set up cunnie's .zshrc

It wasn't set up properly because I needed to test if `~/.oh-my-zsh` was
present, not if `~/.zshrc` was present.

Revert "Install k8s worker: user cunnie has default shell"

This reverts commit 19d798a1fa0451837867f5202bb8c7c3f6995848.

cunnie/bin,cunnie/bin,cunnie/bin,cunnie/bin,cunnie/bin,cunnie/bin,cunnie/bin