virtio-devices: seccomp: Add seccomp filters for vhost_fs thread

This patch enables the seccomp filters for the vhost_fs worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>

vmm/src/device_manager.rs

@@ -2121,6 +2121,7 @@ impl DeviceManager {
                     fs_cfg.num_queues,
                     fs_cfg.queue_size,
                     cache,
+                    self.seccomp_action.clone(),
                 )
                 .map_err(DeviceManagerError::CreateVirtioFs)?,
             ));