[pve-devel] qemu-server : balloning fix (finally !)

[Alexandre Derumier]

The problem seem to come from polling interval, which is not setup automatically
when -machine option exist.

We already setup it manually, but not when we are doing migration.

This patch always setup the pooling interval, if proxmox balloon option != 0

It's working fine with current proxmox pve-qemu-kvm, so no need to remove the balloon stats patch.