[CI] Slim down

Move all extra jobs to the experimental pipeline.
Cores should know when to test these extras.
This is to reduce the load when a fix is needed in the base image
or across all images.
Otherwise, due to how CI works, we incur the cost of running
all these jobs on each recheck.

Change-Id: Ia4aecd2fbe70d1760e0ddc401d06510914dbd1fb
(cherry picked from commit 5797c3a)

Author: yoctozepto

.zuul.d/centos.yaml

@@ -15,21 +15,6 @@
               - ^requirements.txt$
               - ^setup.cfg$
               - ^setup.py$
-        - kolla-ansible-centos8-source-bifrost:
-            files: ^docker\/(base|bifrost|openstack-base)\/.*
-        # Test rabbitmq & mariadb changes in multinode ceph jobs.
-        - kolla-ansible-centos8-source-ceph-ansible:
-            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-centos8-source-upgrade-ceph-ansible:
-            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-centos8-source-zun:
-            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
-        - kolla-ansible-centos8-source-scenario-nfv:
-            files: ^docker\/(base|barbican|heat|mistral|openstack-base|redis|tacker)\/.*
-        - kolla-ansible-centos8-source-ironic:
-            files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
-        - kolla-ansible-centos8-source-swift:
-            files: ^docker/(base|openstack-base|glance|swift)/
     check-arm64:
       jobs:
         - kolla-build-centos8-source-aarch64
@@ -47,6 +32,23 @@
       jobs:
         - kolla-publish-centos8-source
         - kolla-publish-centos8-binary
+    experimental:
+      jobs:
+        - kolla-ansible-centos8-source-bifrost:
+            files: ^docker\/(base|bifrost|openstack-base)\/.*
+        # Test rabbitmq & mariadb changes in multinode ceph jobs.
+        - kolla-ansible-centos8-source-ceph-ansible:
+            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
+        - kolla-ansible-centos8-source-upgrade-ceph-ansible:
+            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
+        - kolla-ansible-centos8-source-zun:
+            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
+        - kolla-ansible-centos8-source-scenario-nfv:
+            files: ^docker\/(base|barbican|heat|mistral|openstack-base|redis|tacker)\/.*
+        - kolla-ansible-centos8-source-ironic:
+            files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
+        - kolla-ansible-centos8-source-swift:
+            files: ^docker/(base|openstack-base|glance|swift)/
 
 - job:
     name: kolla-build-centos8-binary

.zuul.d/ubuntu.yaml

@@ -7,17 +7,6 @@
         - kolla-ansible-ubuntu-source
         - kolla-ansible-ubuntu-binary
         - kolla-ansible-ubuntu-source-upgrade
-        # Test rabbitmq and mariadb in multinode ceph jobs.
-        - kolla-ansible-ubuntu-source-ceph-ansible:
-            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-ubuntu-source-upgrade-ceph-ansible:
-            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-ubuntu-source-zun:
-            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
-        - kolla-ansible-ubuntu-source-ironic:
-            files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
-        - kolla-ansible-ubuntu-source-swift:
-            files: ^docker/(base|openstack-base|glance|swift)/
     check-arm64:
       jobs:
         - kolla-build-ubuntu-source-aarch64
@@ -35,6 +24,19 @@
       jobs:
         - kolla-publish-ubuntu-source
         - kolla-publish-ubuntu-binary
+    experimental:
+      jobs:
+        # Test rabbitmq and mariadb in multinode ceph jobs.
+        - kolla-ansible-ubuntu-source-ceph-ansible:
+            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
+        - kolla-ansible-ubuntu-source-upgrade-ceph-ansible:
+            files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
+        - kolla-ansible-ubuntu-source-zun:
+            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
+        - kolla-ansible-ubuntu-source-ironic:
+            files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
+        - kolla-ansible-ubuntu-source-swift:
+            files: ^docker/(base|openstack-base|glance|swift)/
 
 - job:
     name: kolla-build-ubuntu-binary