Block the addition of ssl_ca certificates with the same subject name

[Ghada Khalil]

Brief Description
-----------------
The sysinv software currently allows the addition of multiple ssl_ca certificates with the same subject name. This results in later failure if one of these certificates is no longer valid.

This is recommended to block the addition of ssl_ca certificates with the same subject name to prevent this issue in the first place.

Severity
--------
<Minor: System/Feature is usable with minor issue>

Steps to Reproduce
------------------
- system certificate-install -m ssl_ca <ca certificate>
- system certificate-install -m ssl_ca <duplicate ca certificate>

Expected Behavior
------------------
The second cmd returns an error indicating that the certificate has the same subject name

Actual Behavior
----------------
The second cmd goes through

Reproducibility
---------------
Reproducible

System Configuration
--------------------
Any

Branch/Pull Time/Commit
-----------------------
any recent load, but this is a day 1 code oversight

Last Pass
---------
Never

Timestamp/Logs
--------------
Not Required

Test Activity
-------------
Regression Testing

Workaround
----------
Avoid adding certificates with the same subject name

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/ansible-playbooks/+/851894

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/ansible-playbooks/+/851894
Committed: https://opendev.org/starlingx/ansible-playbooks/commit/6130e999d56b14e56c384f69bc079c78fdb1104c
Submitter: "Zuul (22348)"
Branch: master

commit 6130e999d56b14e56c384f69bc079c78fdb1104c
Author: Karla Felix <email address hidden>
Date: Tue Aug 2 11:57:31 2022 -0300

    Block addition of ssl_ca certs with same subject

    Ansible playbook will fail in a re-run when it try to install
    the ssl_ca certificate for the second time, this change will
    prevent the fail by checking for existing ssl_ca certificates
    and deleting them before installing.

    Test Plan:

    PASS: Check re-run of the bootstrap.yml playbook multiple times.

    Closes-bug: 1981100

    Signed-off-by: Karla Felix <email address hidden>
    Change-Id: Ic87d216bc0b93af13b57faf38cedeba050e5c631

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/config/+/850060
Committed: https://opendev.org/starlingx/config/commit/7bd617b2fbbb11ac30e4037be818d1093113e5be
Submitter: "Zuul (22348)"
Branch: master

commit 7bd617b2fbbb11ac30e4037be818d1093113e5be
Author: Karla Felix <email address hidden>
Date: Fri Jul 15 14:46:20 2022 -0300

    Block ssl_ca certificates with same subject

    Block the addition of ssl_ca certificates with same subject name

    Test Plan:

    PASS: Attempted to install another certificate with same subject, and
          verified that it fails with an error.
    PASS: Generate and install a full iso and verified that columns subject
          and hash_subject were added to certificate table.
    PASS: Verified that when there is a subject name clash the command
          system certificate-install returns an error and the certificate
          that has the same subject
    PASS: Verified that the system shows an error when the subject field is
          emtpy for ssl_ca
    PASS: Verified that a new column subject shows up for command
          system certificate-list
    PASS: Verified that a new column subject shows up as a return to
          a successful system certificate-install command

    Depends-on: https://review.opendev.org/c/starlingx/ansible-playbooks/+/851894
    Closes-bug: 1981100
    Signed-off-by: Karla Felix <email address hidden>
    Change-Id: I7ce11cc5dab6f686d360d01594ba100d07d2c2db