vm registration and clean up api's

[tsivakca67]

I am using pfring_zc_vm_register supplying the monitor socket for different vm's
How do I handle the scenario of a guest machine (vm) restarting?
Is there an api for unregistering the monitor socket on error and re-register it with
another socket and inform the backend too?

[cardigliano]

@tsivakca67 there is no api for this actually, it requires a zbalance_ipc restart.