Add config options for:
reserved-host-memory:
Memory reserved for host processes, and not used when
calculating capacity for instance allocation.
pci-passthrough-whitelist:
List of PCI devices/vendors to use for direct passthrough
to instances.
vcpu-pin-set:
CPU cores to reserve for host rather than instance usage.
These features are used for hugepage backed VMs, SR-IOV and
CPU pinning in NFV OpenStack deployments running VNF workloads.
Change-Id: I93b2a0e0c568e3129002d0f505d74cf3513a4930
577b3e8ef8