Update .gitignore
Update .gitignore

Signed-off-by: Jan Engelhardt <f383ed465f890d2e8ea864dd0c28cf8ec50a8942@medozas.de>

vyos/libmnl,cyclops8456/libmnl,greearb/libmnl-ct,cyclops8456/libmnl,fqrouter/libmnl,threatstack/libmnl,greearb/libmnl-ct,chamaken/libmnl,vyos/libmnl,vyos/libmnl,vyatta/libmnl,chamaken/libmnl,fqrouter/libmnl,vyatta/libmnl,Distrotech/libmnl,cyclops8456/libmnl,remfalc/vyt-libmnl,threatstack/libmnl,remfalc/vyt-libmnl,Distrotech/libmnl