CI: Move failing jobs to experimental queue

The Rocky Linux 9 seed jobs are failing due to the latest keystoneauth
release dropping support for Python 3.9 [1], while the openstacksdk
virtualenv is still created with the default Python interpreter.

This will be resolved by supporting Rocky Linux 10.

[1] https://review.opendev.org/c/openstack/keystoneauth/+/949008

Change-Id: I859528f0834d6679bd9d3b7d5248f0196aae5bae
Signed-off-by: Pierre Riteau <pierre@stackhpc.com>

Author: priteau

zuul.d/project.yaml

@@ -17,11 +17,8 @@
         - kayobe-overcloud-host-configure-rocky9
         - kayobe-overcloud-host-configure-ubuntu-noble
         - kayobe-overcloud-upgrade-ubuntu-noble
-        - kayobe-seed-rocky9
-        - kayobe-seed-rocky9-podman
         - kayobe-seed-ubuntu-noble
         - kayobe-seed-ubuntu-noble-podman
-        - kayobe-seed-upgrade-rocky9
         - kayobe-seed-upgrade-ubuntu-noble
         - kayobe-seed-vm-rocky9
         - kayobe-seed-vm-rocky9-efi
@@ -63,3 +60,6 @@
         - kayobe-seed-images-rocky9-podman
         - kayobe-seed-images-ubuntu-noble
         - kayobe-seed-images-ubuntu-noble-podman
+        - kayobe-seed-rocky9
+        - kayobe-seed-rocky9-podman
+        - kayobe-seed-upgrade-rocky9