Network Cleanup process is not removing unused config

[Lucas Ratusznei Fonseca]

Brief Description
-----------------
Network interface config files in /etc/network/interfaces.d/ remain after bootstrap. Config files that are created prior to the bootstrap should not remain in the directory, they are a potential source of issues.
Related DHCP issues have already been reported in https://bugs.launchpad.net/starlingx/+bug/2045656 and already been solved by removing the auto keyword from the files. But it's best to clean up the directory to avoid any potential problems.

Severity
--------
Standard

Steps to Reproduce
------------------
Run bootstrap

Expected Behavior
------------------
/etc/network/interfaces.d/ has no interface config files

Actual Behavior
----------------
/etc/network/interfaces.d/ has interface config files

Reproducibility
---------------
100% reproducible

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/ansible-playbooks/+/910410

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/ansible-playbooks/+/910410
Committed: https://opendev.org/starlingx/ansible-playbooks/commit/9e787ff6991874455f548c61c6bc33782348a2f0
Submitter: "Zuul (22348)"
Branch: master

commit 9e787ff6991874455f548c61c6bc33782348a2f0
Author: Lucas Ratusznei Fonseca <email address hidden>
Date: Tue Feb 27 15:55:36 2024 -0300

    Add task to clean up unused network interface config files

    This commit adds a task to clean up interface config files from
    /etc/network/interfaces.d/, to eliminate any potential problems that
    could arise from having them during the unlock.
    It replaces the commit generated from
    https://review.opendev.org/c/starlingx/ansible-playbooks/+/902637.

    Test plan

    [PASS] Add interface config files to /etc/network/interfaces.d/, run
           playbook, check that directory is clean

    Closes-Bug: #2055183
    Change-Id: I0391ce65e54bfeea21649d879af0187e46d0b378
    Signed-off-by: Lucas Ratusznei Fonseca <email address hidden>