StatefulSet alike IP allocation for kubevirt vm

[oilbeater]

Feature request

Kube-OVN now provides a unique way to allocate ip for pods controlled by a StatefulSet. That's random allocate IP first time when pod is created, then during the lifecycle of the StatefulSet, pod with same name will always get the same IP after deleting and recreating.

This allocation strategy is also what kubevirt users expect. The VM gets a random IP address when provision, then after rebooting, stop and migration it preserves the same IP address.

Use case

Kubevirt users who need stable IP for VM