Remove openshift functional testing

OpenShift has removed their 3.11 container images from dockerhub
and while some of them are available at quay.io, not all of them
are, and it does not appear that we are able to install 3.11 any
more.

To unblock development in nodepool, remove the functional testing.

We will rely on the existing fake-based unit tests now.

Change-Id: Ifb4b02ae1058c7549c30ab915591d4b171e3540e

.zuul.yaml

@@ -8,23 +8,6 @@
       - zuul/nodepool
     nodeset: debian-bookworm
 
-- job:
-    description: |
-      Test that nodepool works with openshift.
-    name: nodepool-functional-openshift
-    pre-run: playbooks/nodepool-functional-openshift/pre.yaml
-    run: playbooks/nodepool-functional-openshift/run.yaml
-    nodeset:
-      nodes:
-        # Runs openshift
-        - name: cluster
-          label: centos-7
-        # Runs nodepool
-        - name: launcher
-          label: debian-bookworm
-    required-projects:
-      - zuul/nodepool
-
 - secret:
     name: nodepool-registry-credentials
     data:
@@ -279,7 +262,6 @@
         - nodepool-nox-py311
         - nodepool-functional-container-openstack-release
         - nodepool-functional-k8s
-        - nodepool-functional-openshift
         - zuul-quick-start:
             requires: zuul-container-image
             dependencies: nodepool-build-image
@@ -295,7 +277,6 @@
             nodeset: ubuntu-jammy
         - nodepool-nox-py311
         - nodepool-functional-k8s
-        - nodepool-functional-openshift
         - zuul-quick-start:
             requires: zuul-container-image
             dependencies: nodepool-upload-image

playbooks/nodepool-functional-openshift/pre.yaml

@@ -1,34 +0,0 @@
-- name: Configure a multi node environment
-  hosts: all
-  tasks:
-    - name: Set up multi-node firewall
-      include_role:
-        name: multi-node-firewall
-
-    - name: Set up multi-node firewall
-      include_role:
-        name: multi-node-hosts-file
-
-- hosts: launcher
-  roles:
-    - role: bindep
-    - role: ensure-zookeeper
-      zookeeper_use_tls: true
-    - role: ensure-nox
-  tasks:
-    # NOTE(ianw) 2022-09-07 :
-    # Shipped packages do not work and we need to use this statically
-    # linked binary; see
-    #  https://issues.redhat.com/browse/OCPBUGS-559
-    - name: Ensure oc client is installed
-      shell: |
-          CLIENT=openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit
-          wget https://github.com/openshift/origin/releases/download/v3.11.0/${CLIENT}.tar.gz
-          tar xvf ${CLIENT}.tar.gz
-          sudo mv ${CLIENT}/oc /usr/local/bin
-          sudo mv ${CLIENT}/kubectl /usr/local/bin
-          oc version
-
-- hosts: cluster
-  roles:
-    - ensure-openshift

playbooks/nodepool-functional-openshift/run.yaml

@@ -1,17 +0,0 @@
-- hosts: cluster
-  roles:
-    - deploy-openshift
-
-- hosts: launcher
-  pre_tasks:
-    - name: Login to the openshift cluster as developer
-      command: >
-          oc login -u developer -p developer --insecure-skip-tls-verify=true
-          https://{{ hostvars['cluster']['ansible_hostname'] }}:8443
-  roles:
-    - role: nox
-      nox_session: functional_openshift
-      nox_environment:
-        NODEPOOL_ZK_CA: /opt/zookeeper/ca/certs/cacert.pem
-        NODEPOOL_ZK_CERT: /opt/zookeeper/ca/certs/client.pem
-        NODEPOOL_ZK_KEY: /opt/zookeeper/ca/keys/clientkey.pem