Add PCI to nova compute container for passthrough support

Nova's whitelist mechanism requires access to the PCI related
directories in the filesystem to service PCI passthrough requests.

Change-Id: Icfad1d116662798701228b142e224513f7dd22e2

docker/services/nova-compute.yaml

@@ -117,6 +117,8 @@ outputs:
                   - /var/lib/nova:/var/lib/nova
                   - /var/lib/libvirt:/var/lib/libvirt
                   - /var/log/containers/nova:/var/log/nova
+                  - /sys/class/net:/sys/class/net
+                  - /sys/bus/pci:/sys/bus/pci
             environment:
              - KOLLA_CONFIG_STRATEGY=COPY_ALWAYS
       host_prep_tasks: