Comment 4 for bug 1866695

Reviewed: https://review.opendev.org/713020
Committed: https://git.openstack.org/cgit/starlingx/config/commit/?id=d7c3822a52ecc3b4288106c4e544e67add80fbf5
Submitter: Zuul
Branch: master

commit d7c3822a52ecc3b4288106c4e544e67add80fbf5
Author: Jerry Sun <email address hidden>
Date: Fri Mar 13 12:37:39 2020 -0400

    Remove usage of /etc/kubernetes/kubeadm.yaml

    /etc/kubernetes/kubeadm.yaml could contain stale data, for example, from
    changing kube-apiserver parameters. There are currently no system impacts
    from using the stale file, but as we change more parameters, there could
    be system impact. This commit makes the existing usage of kubeadm.yaml
    generate a temp copy of the file with current data first.

    Change-Id: I62391d184e3e5d6397a9af4f43c7c7ec19314afc
    Partial-bug: 1866695
    Signed-off-by: Jerry Sun <email address hidden>