neutron-sriov-agent: mount host sys-fs path in container

Several sriov drivers (i.e. TaaS, Trunking) require the write permissions
to files in /sys/class/net/ and /sys/devices.

This patchset mounts the host's above mentioned sys-fs folders for the
neutron-sriov-agent container.

Change-Id: I87f51d1ad46bb272beb9401f2b428c81c3dc6f69

neutron/templates/daemonset-sriov-agent.yaml

@@ -141,6 +141,10 @@ spec:
           command:
             - /tmp/neutron-sriov-agent.sh
           volumeMounts:
+            - mountPath: /sys/class/net
+              name: host-sys-class-net
+            - mountPath: /sys/devices
+              name: host-sys-devices
             - name: pod-tmp
               mountPath: /tmp
             - name: neutron-bin
@@ -206,6 +210,12 @@ spec:
               mountPath: /run
 {{ if $mounts_neutron_sriov_agent.volumeMounts }}{{ toYaml $mounts_neutron_sriov_agent.volumeMounts | indent 12 }}{{ end }}
       volumes:
+        - name: host-sys-class-net
+          hostPath:
+            path: /sys/class/net
+        - name: host-sys-devices
+          hostPath:
+            path: /sys/devices
         - name: pod-tmp
           emptyDir: {}
         - name: pod-shared