Updated SRIOV test to use default NIC.
Updated SRIOV test to use default NIC.

This change was needed due to new kernel feature: Transparent SRIOV.

iamshital/azure-linux-automation,v-sirebb/azure-linux-automation,v-sirebb/azure-linux-automation,v-sirebb/azure-linux-automation,konkasoftci/azure-linux-automation,iamshital/azure-linux-automation,konkasoftci/azure-linux-automation,konkasoftci/azure-linux-automation,iamshital/azure-linux-automation