fix: Skip the loopback profile when deleting all profiles except the ones explicitly included

[emi80]

Enhancement: This PR adds the loopback device to black_list_names when deleting all profiles except the ones explicitly included in the ansible playbook

Reason: Adding an entry without a name and persistent_state: absent to the network_connections variables would trigger a changed state in one of the tasks

TASK [network : Configure networking connection profiles] **********************
changed: [hostname]

This was because the profile loopback device was being removed and then automatically recreated by the system.

Result: Now the loopback profile is kept and the state is not reported as changed:

TASK [network : Configure networking connection profiles] **********************
ok: [hostname]

Issue Tracker Tickets (GitHub issue): #689

Summary by Sourcery

Keep the loopback network profile from being deleted when purging absent profiles to prevent false-positive changes in Ansible playbooks

Bug Fixes:

• Prevent Ansible from reporting a changed state by avoiding removal and automatic recreation of the loopback profile

Enhancements:

• Add "lo" (loopback) to the blacklist when deleting all non-explicit network profiles

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The PR updates the 'absent' action in the network_connections module to exclude the loopback interface ('lo') from deletion, preventing a spurious 'changed' state each run when the system auto-recreates it.

Flow diagram for updated profile deletion logic (excluding loopback)

flowchart TD
    A["Start profile deletion (absent action)"] --> B["Get non-absent profile names"]
    B --> C["Add 'lo' (loopback) to blacklist"]
    C --> D["Iterate over all network profiles"]
    D --> E["If profile is in blacklist, skip deletion"]
    D --> F["If profile is not in blacklist, delete profile"]
    E --> G["End"]
    F --> G["End"]

Loading

File-Level Changes

Change	Details	Files
Exclude loopback interface from profile deletion	Add black_list_names.add("lo") to skip loopback Insert comment explaining rationale for skipping loopback	library/network_connections.py

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 43.22%. Comparing base (1b57520) to head (76c97ff).
⚠️ Report is 47 commits behind head on main.

Files with missing lines	Patch %	Lines
library/network_connections.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #813      +/-   ##
==========================================
+ Coverage   43.11%   43.22%   +0.10%     
==========================================
  Files          12       12              
  Lines        3124     3123       -1     
==========================================
+ Hits         1347     1350       +3     
+ Misses       1777     1773       -4     

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[richm]

[citest]