Update zuul queue configuration

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

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

Change-Id: I944028615f6fcc14bb5316ef790bb07ae28b1a1c
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 9e4b890..cea3bfe 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -59,9 +59,9 @@
             voting: false
         - neutron-ovn-provider-v2-scenario:
             voting: false
+    queue: octavia
     gate:
       fail-fast: true
-      queue: octavia
       jobs:
         - octavia-v2-dsvm-noop-api
         - octavia-v2-dsvm-noop-api-stable-yoga