Initial system configuration, including IPv6 address with brackets and without port, fails

[Adriano Oliveira]

Brief Description
-----------------
A DC subcloud configuration failed because of error in ipv6 address validation.

Severity
--------
Critical

Steps to Reproduce
------------------
install DC system controller

Expected Behavior
------------------
ansible pass

Actual Behavior
----------------
ansible failed

Reproducibility
---------------
It is the first saw this issue

System Configuration
--------------------
DC

Branch/Pull Time/Commit
-----------------------
2022-01-11_20-00-06

Last Pass
---------
2022-01-10_02-00-35

Timestamp/Logs
--------------

Failed to update the initial system config.
2022-01-12 05:58:23,938 p=11036 u=sysadmin | TASK [bootstrap/persist-config : Fail if populate config script throws an exception] ***
2022-01-12 05:58:23,938 p=11036 u=sysadmin | Wednesday 12 January 2022 05:58:23 +0000 (0:00:00.367) 0:03:50.929 *****
2022-01-12 05:58:23,963 p=11036 u=sysadmin | fatal: [localhost]: FAILED! => changed=false
msg: Failed to provision initial system configuration.
2022-01-12 05:58:23,964 p=11036 u=sysadmin | PLAY RECAP *********************************************************************
2022-01-12 05:58:23,964 p=11036 u=sysadmin | localhost : ok=198 changed=68 unreachable=0 failed=1

Test Activity
-------------
installation

[Adriano Oliveira (aoliveir)]

Additional logs:

sysinv 2022-01-12 05:58:23.511 83776 WARNING wsme.api [-] Client-side error: Parameter 'no_proxy' includes an invalid address '[fd04::1]'.: ClientSideError: Parameter 'no_proxy' includes an invalid address '[fd04::1]'.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/config/+/824654

[Ghada Khalil (gkhalil)]

screening: stx.7.0 / critical - this issue was recently introduced by the following change: https://review.opendev.org/c/starlingx/config/+/819475/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/config/+/824757
Committed: https://opendev.org/starlingx/config/commit/682ad57a2cccea6b2d16212ac448f06ea5337446
Submitter: "Zuul (22348)"
Branch: master

commit 682ad57a2cccea6b2d16212ac448f06ea5337446
Author: Luis Eduardo Angelini Marquitti <email address hidden>
Date: Fri Jan 14 20:10:52 2022 +0000

    Revert "Improving IPV4 validation for configs"

    This reverts commit 70eac8bd1f6c237d475ae15f4cae715ddf110f31.

    Reason for revert: Side effect on IPv6 addresses with brackets and
    without port. Fix under testing on
    https://review.opendev.org/c/starlingx/config/+/824654.

    Closes-Bug: 1957836

    Change-Id: Ib3025b148171298e16b9c38af8654ce5e77b10cb