As a developer I want to simplify the installer network configuration by not creating the default network device configuration files in Anaconda.

Traditionally, Anaconda is creating persistent configuration (ifcfg file or keyfile file) for each ethernet device. We should reconsider it.

• Can fix or prevent some existing problems:
  • https://bugzilla.redhat.com/show_bug.cgi?id=2031385#c8
  • https://bugzilla.redhat.com/show_bug.cgi?id=2115783
  • https://issues.redhat.com/browse/RHEL-100200
• Already requested in: https://github.com/rhinstaller/anaconda/pull/1588
• May be superseded by larger architecture changes in network configuration related to webui and sharing with Cockpit ? Required for feasible integration of Cockpit networkmanager module and webui network module UI in general (integration with other tools in environment)
• It can be very significant and risky change of behaviour.
  • Can it be potentially configurable ? (that wouldn't make developer's life easier though).
• In the past the ifcfg files for each device were required by installer network config architecture. It is likely not anymore. Needs checking though.

Acceptance criteria:

• The change will not disrupt existing user workflows in an unacceptable way.
• The functionality of network configuration is not reduced.
• Anaconda creates only configuration files for devices explicitly configured by Anaconda (from boot options, kickstart, GUI)