Update zuul queue configuration
Update zuul queue configuration

Zuul is changing how queues are declared[1]. This patch updates Octavia for the new way to define the queue.

[1] https://lists.zuul-ci.org/pipermail/zuul-discuss/2022-May/001801.html

Change-Id: Ie02b5164f3c1089f0d48101aab9e007bb4d132ea

openstack/octavia,openstack/octavia,openstack/octavia