Issue: First time you configure dpdk ovs switch it would stuck on
       answering salt-minion because kernel options, such as
       intel_iommu,iommu,isolcpus, are not set and ovs would
       exhaust all hugepages and fail to apply options on the fly.

Fix:   Configure ovs switch without waiting for an answer and
       reboot the node afterall as we do this all the time before
       starting automated pipeline.

Change-Id: Ica27a6cc47312bcc0762cddde049a0abf771f9fb