Comment 1 for bug 2037552

Reviewed: https://review.opendev.org/c/starlingx/config/+/895218
Committed: https://opendev.org/starlingx/config/commit/91f523f06a5ad0ca50704a527d097eb877915c72
Submitter: "Zuul (22348)"
Branch: master

commit 91f523f06a5ad0ca50704a527d097eb877915c72
Author: Karla Felix <email address hidden>
Date: Thu Sep 14 19:08:04 2023 -0300

    Add error message to system registry-image-delete

    Add an error message to registry-image-delete, currently when users
    attempt to delete a non-existent image, the command fails silently.
    This review is adding an error message to this operation, now when
    the user tries to delete an image that doesn't exist it will be displayed
    this message: "No tag found for image: <image_name>"

    Also improving 'system registry-image-list' by adding an optional
    argument "--filter-out-untagged" to filter and display only images
    that have associated tags in the system registry.

    Test Plan:
    PASS: Run 'system registry-image-list' without '--filter-out-untagged'.
    PASS: Run 'system registry-image-list' with '--filter-out-untagged' and
          verify if the untagged images are out of the list.
    PASS: Delete an image that doesn't exist and verify if it will return
          the error message.
    PASS: Delete an existing image and verify if it was successfully
          deleted.

    Closes-Bug:2037552

    Signed-off-by: Karla Felix <email address hidden>
    Change-Id: Ibbc25dff5f4c1b22d6bf923235e6d0cd821b4953