Comment 2 for bug 2043518

Reviewed: https://review.opendev.org/c/starlingx/ansible-playbooks/+/900963
Committed: https://opendev.org/starlingx/ansible-playbooks/commit/d69c34c118146f8318afb9fdde22f1ee35990ce4
Submitter: "Zuul (22348)"
Branch: master

commit d69c34c118146f8318afb9fdde22f1ee35990ce4
Author: Ramesh Kumar Sivanandam <email address hidden>
Date: Tue Nov 14 19:09:46 2023 -0500

    Fetch the correct Kubernetes version during platform upgrade

    When perform the platform upgrade after the kubernetes version
    upgrade, it fails to fetch the correct Kubernetes version.

    This change obtains the kubernetes version by extracting
    kubeadm_version field of the kube_cmd_versions table in sysinv
    database dump, which is contained in the upgrade_data_*.tgz
    backup file during the platform upgrade.

    This change is identical to code in the file
    playbookconfig/src/playbooks/roles/bootstrap/prepare-env/tasks/main.yml
    which retrieves the kubernetes version from the sysinv database file.

    Test Plan:
    PASS: Install stx5.0, Platform upgrade to stx6.0 and K8s upgrade
          1.18 -> 1.19 -> 1.20 -> 1.21. Platform upgrade to stx.7.0

    Closes-Bug: 2043518

    Change-Id: I5be349db962b7ce4ee0cbd9215dc79b63d6cf168
    Signed-off-by: Ramesh Kumar Sivanandam <email address hidden>