[Comb] Include correct MAC and IPv4/6 address for peer interface.Create DVaaS traffic helper for NSF test infra.Add support for gnmi_config and p4_info to NsfTestParams.Rename Upgrade to ImageCopy to better reflect its functionality.Make error_margin an optional parameter for ValidateTraffic.Implement reboot and gNMI config push helpers.Create flags to skip NSF Upgrade and traffic to only test NSF Reboot.Implement the ImageCopy reusable helper and reuse it in other helpers and NSF test skeleton.Create a reusable Reboot method to perform reboot on the SUT with the given reboot method.

[Comb] Include correct MAC and IPv4/6 address for peer interface.Create DVaaS traffic helper for NSF test infra.Add support for gnmi_config and p4_info to NsfTestParams.Rename Upgrade to ImageCopy to better reflect its functionality.Make error_margin an optional parameter for ValidateTraffic.Implement reboot and gNMI config push helpers.Create flags to skip NSF Upgrade and traffic to only test NSF Reboot.Implement the ImageCopy reusable helper and reuse it in other helpers and NSF test skeleton.Create a reusable Reboot method to perform reboot on the SUT with the given reboot method. #4548