Comment 2 for bug 1958932

Reviewed: https://review.opendev.org/c/starlingx/ansible-playbooks/+/826132
Committed: https://opendev.org/starlingx/ansible-playbooks/commit/a2e87be9579756fd724934f495aa3f214310e86b
Submitter: "Zuul (22348)"
Branch: master

commit a2e87be9579756fd724934f495aa3f214310e86b
Author: Rei Oliveira <email address hidden>
Date: Mon Jan 24 14:38:31 2022 -0300

    Install Root CA when migrating certificates

    This is a refactor of the ssl_ca certificate install in order to
    support multiple certificates by specifying certificates as parameters.

    Now, the playbook also installs the Root CA certificate alongside the
    ICA certificate. That fixes the bug with system registry-image-list.

    Also, updated naming for some parameters and documentation in
    migrate-subcloud1-overrides-EXAMPLE.yml to better explain parameters
    now that Root CA is introduced.

    Test Plan:
    PASS: Run the playbook and system certificate-list. Check that both
          system_local_ca_cert and root_ca_cert are installed.
    PASS: Run the playbook and check that system registry-list returns with
          no errors
    PASS: Run the playbook with unrelated system_local_ca_cert and
          root_ca_cert and verify the playbook shows an error message

    Closes-Bug: 1958932

    Signed-off-by: Rei Oliveira <email address hidden>
    Change-Id: Iff0dfd51fcc8e4bdb06c13789e079423a27a8cb8