Comment 8 for bug 1865119

Reviewed: https://review.opendev.org/710497
Committed: https://git.openstack.org/cgit/openstack/kolla/commit/?id=d53ead9421a288137fba8e20b22844d1cdce6506
Submitter: Zuul
Branch: stable/stein

commit d53ead9421a288137fba8e20b22844d1cdce6506
Author: Xing Zhang <email address hidden>
Date: Fri Feb 28 15:11:30 2020 +0800

    Fix kolla_toolbox_pip_virtualenv_packages override

    backport: train, stein, rocky

    Override in filter needs to follow the rule:
    <image_name>_<call_type>_<override/append/remove>
    `call_type` for `kolla_toolbox_pip_virtualenv_packages` should be
    `pip_virtualenv_packages`, and `pip_packages` can't match with
    `kolla_toolbox_pip_virtualenv_packages`, this makes
    the value can't be overrode in template override.

    Change-Id: I1dbe2dfd4bce73ce2285f45f997d45b5dcc95f4c
    Closes-bug: #1865119
    (cherry picked from commit 74d5a66e6bf744ad936d702443a8d64be86441ba)