Comment 2 for bug 2039282

Reviewed: https://review.opendev.org/c/starlingx/metal/+/898245
Committed: https://opendev.org/starlingx/metal/commit/e81d0bf4e7f6c3ff0c814ac48b923dc8d889df03
Submitter: "Zuul (22348)"
Branch: master

commit e81d0bf4e7f6c3ff0c814ac48b923dc8d889df03
Author: Kyle MacLeod <email address hidden>
Date: Thu Oct 12 11:16:59 2023 -0400

    Prestaged ISO: copy ostree_repo to versioned platform-backup

    This commit applies to the prestaged ISO install. The kickstart.cfg is
    updated to copy the prestaged ostree_repo into release-specific
    /opt/platform-backup/<release> location.

    A minor change is also included in miniboot.cfg to sync the patching
    metadata for prepatched ISOs. This fills a potential hole in the
    patching metadata sync behaviour identified during testing.
    Normally the patching metadata is synchronized from the system
    controller down to the subcloud. For the prestaged ISO case, this change
    is necessary to ensure the patching metadata is seeded from the
    prepatched ISO created via gen-prestaged-iso.sh.

    Test Plan
    PASS:
    - Build prestaged ISO, including container images and a patch
        - Install subcloud using prestaged ISO
        - Verify contents of /opt/platform-backup/<release> are properly
          populated.
        - Verify subcloud is installed using prestaged data from
          /opt/platform-backup/<release>
        - Verify that included container images are installed
    - Build prestaged ISO using a pre-patched ISO. Install subcloud, ensure
      that patching metadata is properly synchronized on installation.

    Out of scope failure:
    - A new bug to be raised for the following:
        - Verify that the included patch is installed on the subcloud
          - It appears that this has never worked in Debian. The --patch
            option makes sense for a Debian installation, since the patches
            are contained in ostree commits. To fully support this
            functionality we need to implement a new mechanism to do a
            sw-patch upload and apply at some point during the installation.
          - Support for the gen-prestaged-iso.sh --patch option will be
            added in a future commit

    Closes-Bug: 2039282
    Signed-off-by: Kyle MacLeod <email address hidden>
    Change-Id: I973f4704eae09634a0c3fe2f7fbc31ac1835fcf8