nova-compute charm only reports JUJU_AZ setting not config setting

[Billy Olsen]

Commit 9f4369d9 added a feature to set the availability zone as part of the cloud-compute relation to nova-cloud-controller so that the host aggregates can be configured in Nova via a new sync command. However, the nova-compute charm only sets the value based on the JUJU_AVAILABILITY_ZONE setting. This should use the utils method get_availability_zone() which will return the availability zone that is configured for the nova-compute services themselves.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-nova-compute/+/787470

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-nova-compute/+/787470
Committed: https://opendev.org/openstack/charm-nova-compute/commit/bfc3436a32b7f5d82e662a4fc46083e2b76f6209
Submitter: "Zuul (22348)"
Branch: master

commit bfc3436a32b7f5d82e662a4fc46083e2b76f6209
Author: Billy Olsen <email address hidden>
Date: Wed Apr 21 20:48:46 2021 -0700

    Use get_availability_zone() on cloud-compute relation

    Commit 9f4369d9 added a feature to set the availability zone of
    the nova-compute unit on the cloud-compute relation. This uses the
    value of the JUJU_AVAILABILITY_ZONE environment variable, which is
    not consistent with how the nova-compute service sets its availability
    zone.

    Use the nova_compute_utils.get_availability_zone() method instead.

    Closes-Bug #1925412

    Change-Id: Ie68ecd808a60baf0d5bfe526f4355ce3c7ae5c77