Run openshift test launcher on debian

The openshift test job needs a node upon which to install and run
the launcher.  Fedora 36 is no longer available and Fedora nodes
are being removed from OpenDev in general, so switch to Debian.

Change-Id: I21ef301eb53112655c4c92f6927e56b3e0d15061
Depends-On: https://review.opendev.org/891212

.zuul.yaml

@@ -21,7 +21,7 @@
           label: centos-7
         # Runs nodepool
         - name: launcher
-          label: fedora-36
+          label: debian-bookworm
     required-projects:
       - zuul/nodepool
 
@@ -285,7 +285,7 @@
         - nodepool-nox-py311
         - nodepool-functional-container-openstack-release
         - nodepool-functional-k8s
-        # - nodepool-functional-openshift
+        - nodepool-functional-openshift
         - zuul-quick-start:
             requires: zuul-container-image
             dependencies: nodepool-build-image
@@ -299,7 +299,7 @@
             nodeset: ubuntu-focal
         - nodepool-nox-py311
         - nodepool-functional-k8s
-        # - nodepool-functional-openshift
+        - nodepool-functional-openshift
         - zuul-quick-start:
             requires: zuul-container-image
             dependencies: nodepool-upload-image