bond-slaves does not implement the regex and glob variants

[klaernie]

Hi there!

In https://github.com/CumulusNetworks/ifupdown2/blob/master/ifupdown2/addons/bond.py#L157-L159 it is documented that one should be able to specify the enslaved ports of a bond as bond-slaves glob enp*s* or bond-slaves regex enp\ds\d, but neither work.

I had issues with the bond coming up on my Proxmox servers, where plugging in a unrelated PCIe card leads to the network device names shifting. So it would really be nice to specify it as "just enslave all network cards you can find" (as the machine never has more than two at the time) any my config would not require changing network configuration during a downtime that just adds an NVMe card.

Thanks and best regards,
Andre