Use Vsock with Libzmq

Use VSOCK with libzmq AF_VSOCK VSOCK is not new anymore it has been around in Linux kernel since 4.8. For those who do not know what this is, it was previously developed by VMware under the name VMCI. AF_VSOCK is a socket address family like AF_INET or AF_UNIX. It’s an address family designed for communication between a VM (guest) and the underlying hypervisor (host), you can also build communication between multiple guests on the same host. Previously, this kind of communication was done with a serial port, a great example is https://pve.proxmox.com/wiki/Qemu-guest-agent.