VPP_Device Functional

CSIT-1908 includes VPP_Device test environment for functional VPP device tests integrated into LFN CI/CD infrastructure. VPP_Device tests run on 1-Node testbeds (1n-skx, 1n-arm) and rely on Linux SRIOV Virtual Function (VF), dot1q VLAN tagging and external loopback cables to facilitate packet passing over exernal physical links. Initial focus is on few baseline tests. Existing CSIT Performance tests can be moved to VPP_Device framework. RF test definition code stays unchanged with the exception of traffic generator related L2 KWs.