Comment 16 for bug 1952363

Reviewed: https://review.opendev.org/c/openstack/charms.openstack/+/819912
Committed: https://opendev.org/openstack/charms.openstack/commit/58fc4dadac4a40ab0d2e78897e0c77ffeeacb051
Submitter: "Zuul (22348)"
Branch: master

commit 58fc4dadac4a40ab0d2e78897e0c77ffeeacb051
Author: Felipe Reyes <email address hidden>
Date: Tue Nov 30 15:49:40 2021 -0300

    Register previously vip set for deletion.

    When the vip is changed the ones that are no longer present need to be
    registered for deletion from pacemaker's configuration. This change
    relies on hookenv.config.changed() to determine what vip(s) are no
    longer present in the configuration and ask hacluster to remove them.

    Closes-Bug: #1952363
    Change-Id: I1afe987ff26af0e10604dd507daef4ac282d9aab