Comment 2 for bug 2039507

Reviewed: https://review.opendev.org/c/starlingx/distcloud/+/898508
Committed: https://opendev.org/starlingx/distcloud/commit/680254d361410e0e207436b234bef4b140b78488
Submitter: "Zuul (22348)"
Branch: master

commit 680254d361410e0e207436b234bef4b140b78488
Author: Yuxing Jiang <email address hidden>
Date: Mon Oct 16 21:01:57 2023 -0400

    Support rehoming a CentOS subcloud to a Debian system controller

    This commit adds the following support for the ansible subcloud
    rehoming playbook from the previous CentOS release, to enable rehoming
    a CentOS subcloud to a Debian system controller:

    1. Exports the smapi password to the subcloud's overrides file
    2. Adds the absolute path of the validate_keystone_password.sh on the
    subcloud to support the playbook to invoke this script in the
    subcloud.

    Test plan:
    1. PASS - Rehome an AIOSX subcloud installed with the same software
    version with the system controllers.
    2. PASS - Rehome an AIOSX subcloud installed with 21.12 version to
    a system controller installed with the master, specifying the
    --release argument with the value of 21.12.

    Closes-bug: 2039507
    Signed-off-by: Yuxing Jiang <email address hidden>
    Change-Id: I24367e88acf6f785827b27daa9d390b188ae423e