* vyos interfacefix and test cases Signed-off-by: rohitthakur2590 <rohitthakur2590@outlook.com> (cherry picked from commit be1820d3aff5958991911aed55c7e7627bcbc1d8) * backport 28 Signed-off-by: rohitthakur2590 <rohitthakur2590@outlook.com>