Comment 2 for bug 1949119

Reviewed: https://review.opendev.org/c/starlingx/distcloud/+/815912
Committed: https://opendev.org/starlingx/distcloud/commit/671ea28adc03cd31d0da5cc6db2cabb83ca47e63
Submitter: "Zuul (22348)"
Branch: master

commit 671ea28adc03cd31d0da5cc6db2cabb83ca47e63
Author: albailey <email address hidden>
Date: Thu Oct 28 16:50:39 2021 -0500

    Add validation for kube rootca during strategy create

    The validation code has been duplicated from sysinv since
    there is no validation library that can be imported for
    the certificate subject and expiry date.

    This is a usability fix, since the code acts the same, but
    the strategy will not need to wait and be applied to see
    the error.

    Test Plan:
     Verified invalid subject is rejected during creation
     Verified invalid subject arguments rejected during creation
     Verified invalid expiry-date is rejected during creation
     Verified expired expiry-date is rejected during creation
     Verified valid values are accepted for subject and expiry date
     Verified cert-file cannot be passed with subject or expiry_date

    Change-Id: I24875dbe129eb2ad4c52b2617710277472b9a89e
    Closes-Bug: 1949119
    Signed-off-by: albailey <email address hidden>