Merge pull request #7189 from wenottingham/aaargh

Hardcode --kubeconfig and therefore only support OpenShift 3.11+

Reviewed-by: https://github.com/apps/softwarefactory-project-zuul

installer/roles/kubernetes/tasks/openshift_auth.yml

@@ -1,12 +1,4 @@
 ---
-- name: Determine version of oc
-  shell: oc version | sed -n 's/oc v//p'
-  register: oc_version
-
-- name: Use correct cli option for kubeconfig
-  set_fact:
-    oc_kubeconfig_option: "{{ '--kubeconfig' if oc_version.stdout is version('3.11', '>=') else '--config' }}"
-
 - include_vars: openshift.yml
 
 - name: Set kubernetes_namespace

installer/roles/kubernetes/vars/openshift.yml

@@ -1,3 +1,3 @@
 ---
 openshift_oc_config_file: "{{ kubernetes_base_path }}/.kube/config"
-openshift_oc_bin: "oc {{ oc_kubeconfig_option }}={{ openshift_oc_config_file }}"
+openshift_oc_bin: "oc --kubeconfig={{ openshift_oc_config_file }}"