Comment 4 for bug 2017763

Reviewed: https://review.opendev.org/c/starlingx/root/+/882338
Committed: https://opendev.org/starlingx/root/commit/add2c84a28ed7b371c0c20ab1be1a55e0ca7410f
Submitter: "Zuul (22348)"
Branch: master

commit add2c84a28ed7b371c0c20ab1be1a55e0ca7410f
Author: hqbai <email address hidden>
Date: Thu May 4 10:33:40 2023 +0800

    build-pkgs: Fixed the deb packages missing issue after reuse

    The '--reuse|--reuse_maximum' feature mirrors the remote
    shared repository and imports all debs from the mirror
    to the local repository, there are no deb packages in the
    local build directory for the reused packages which make
    some tasks like building docker images and secure boot
    signing fail for the missing deb packages.
    This commit supports the below functions to fix the above
    issues:
    a. If '--dl_reused' option is enabled for option '--reuse'
    or '--reuse_maximum', all the reused deb packages will be
    downloaded to their local build directory.
    b. 'never_reuse.lst' will be checked and the packages listed
    in it will be built locally instead of reusing them if the
    option '--reuse' is enabled. And it will be ignored if the
    option '--reuse_maximum' is enabled.

    Test Plan:
    Pass: build-pkgs (make sure the normal build-pkgs works)
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --reuse
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --reuse --dl_reused
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --clean --reuse --dl_reused
          Run the secure boot signing script
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --clean --reuse --dl_reused
          build-pkgs (Make sure this build will not build from scratch)
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --clean --reuse_maximum --dl_reused
    Pass: export STX_SHARED_REPO=<url to shard repo>
          export STX_SHARED_SOURCE=<url to shared source>
          build-pkgs --reuse_maximum --dl_reused

    Partial-Bug: 2017763

    Signed-off-by: hqbai <email address hidden>
    Change-Id: I8cd84dbe6fe8f0262dde12befb0b16367e261968