zuul: Declare queue at top level

Zuul deprecated declaring shared queues at a pipeline level with
release 4.1.0[1]. This updates the job definition to use the top level
declaration instead.

See [2] for details.

[1] https://zuul-ci.org/docs/zuul/latest/releasenotes.html#relnotes-4-1-0-deprecation-notes
[2] http://lists.openstack.org/pipermail/openstack-discuss/2022-May/028603.html

Change-Id: Ia2b73c9cf7c927b774dc2731d32aa6a2e58136b7

.zuul.yaml

@@ -69,6 +69,7 @@
     vars: *zaqar-tempest-swift-vars
 
 - project:
+    queue: zaqar
     templates:
       - check-requirements
       - tempest-plugin-jobs
@@ -79,7 +80,6 @@
         - zaqar-tempest-plugin-swift
         - zaqar-tempest-plugin-swift-ipv6
     gate:
-      queue: zaqar
       jobs:
         - zaqar-tempest-plugin-mongodb
         - zaqar-tempest-plugin-redis