Healing

[Bolodya1997]

Issues

1. If forwarder restarts we loose already allocated SR-IOV token IDs.
2. If vfio-pci driver is bounded to the kernel interface by default, we can't get kernel driver automatically.
3. User needs to manually fetch all PCI functions and then pass it to the resource pool, it looks awful in code.
4. In VFIO case VF has no kernel interface, so we shouldn't fetch it.
5. If device access permissions are given only to the container that makes the request, we miss the case when it is a sidecar container and client container still lacks permissions.

Solutions

1. Add token.Pool Refresh to allow device plugin update allocated IDs on start.
2. Add pfKernelDriver, vfKernelDriver to sriovconfig.Config.
3. Add pci.Pool, pci.UpdateConfig to centralize PCI functions processing.
4. Don't fetch kernel interface name for the VFIO case.
5. Use regex for giving permissions for all containers in pod.