Installs kubectl with auto completion on CoreOS

install_kubectl_coreos.sh

# Run from a Coreos user's home directory
set -e
curl -O https://storage.googleapis.com/kubernetes-release/release/v1.6.1/bin/linux/amd64/kubectl
chmod +x kubectl
sudo mv kubectl /opt/bin
toolbox dnf -y install bash-completion
echo "source /var/lib/toolbox/test-fedora-latest/usr/share/bash-completion/bash_completion" >> ~/.bashrc
echo "source <(kubectl completion bash)" >> ~/.bashrc