bonding: T2367: use simple 'ip addr flush' to flush member addresses
bonding: T2367: use simple 'ip addr flush' to flush member addresses

We've already verified that all member interfaces don't have any
addresses configured, so it should be safe to simply call 'ip addr flush' on
them to flush the remaining addresses (e.g. IPv6 link-local)

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x