Fixes #35180 - Remove default network identifier

[bastian-src]

The Ubuntu Autoinstall cloud-init provisioning template relies on a network identifier name for its network setup. Currently, the default name ens160 is used (if none is given explicitly). Unfortunately, we figured out that this one works only for a specific hardware type. Instead of using a default identifier name, we propose making use of the MAC-matching field.

It allows us to use the MAC instead of the system-generated network identifier (which relies on the compute resource hardware) for matching the network configuration with the corresponding hardware device.

This is a follow-up issue of #9228. Have a look there for more information.

[theforeman-bot]

Issues: #35180

[bastian-src]

@ares how do you think about this change? :)

[bastian-src]

Checks seem fine. @ares do you have any objections? I think its pretty straight forward. Especially, because its been discussed in the community already as mentioned before.