[CI] Move queue setting to project level

Per [1].

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

Change-Id: I46f03329853a2025bff20b7b60e35c06aba619eb
(cherry picked from commit 3967e5c24b)

.zuul.d/base.yaml

@@ -1,4 +1,7 @@
 ---
+- project:
+    queue: kolla
+
 - secret:
     name: kolla_dockerhub_creds
     data:

.zuul.d/centos.yaml

@@ -11,7 +11,6 @@
       jobs:
         - kolla-build-centos8s-source-aarch64
     gate:
-      queue: kolla
       jobs:
         - kolla-build-centos8s-source
         - kolla-ansible-centos8s-source

.zuul.d/ubuntu.yaml

@@ -11,7 +11,6 @@
       jobs:
         - kolla-build-ubuntu-source-aarch64
     gate:
-      queue: kolla
       jobs:
         - kolla-build-ubuntu-source
         - kolla-ansible-ubuntu-source