test: copy BONDBRIDGETEAMVLAN to IFCFG
    
    The IFCFG test will make sure the network-legacy plugin keeps writing
    out correct ifcfg files.
    
    This is a separate commit so that actual changes are visible in the
    following one.
    
    (cherry picked from commit 70787ab61957741a05e4046bad49758c4e9bc1cc)
    
    patch_name: 0043.patch
    present_in_specfile: true
    location_in_specfile: 43
    squash_commits: true