Proxmox 修正 no subscription 錯誤

echo "deb http://download.proxmox.com/debian/pve stretch pve-no-subscription">/etc/apt/sources.list.d/pve-no-subscription.list

mv /etc/apt/sources.list.d/pve-enterprise.list /etc/apt/sources.list.d/pve-enterprise.list.bak