[shiftstack]add missing kubeconfig param

roles/shiftstack/tasks/pre_test_shiftstack.yml

@@ -21,6 +21,7 @@
 
 - name: Remove the shiftstackclient pod if exists
   kubernetes.core.k8s:
+    kubeconfig: "{{ cifmw_openshift_kubeconfig }}"
     state: absent
     api_version: v1
     kind: Pod