Cause: The code was not managing network systemd quadlet units.

Consequence: Network systemd quadlet units were not being stopped and
disabled. Subsequent runs would fail due to the network units not
being cleaned up properly.

Fix: The role manages network systemd quadlet units, including stopping
and removing.

Result: Systemd quadlet network units are properly cleaned up.

In addition - improve the removal of all types of quadlet resources,
and include code which can be used to test and debug quadlet resource
removal.