[ci] Update COO subscription playbook for local execution

Add defaults to the expected vars

Author: elfiesmelfie

README.md

@@ -293,6 +293,15 @@ If you need to connect directly to the CRC VM just use
 ssh -i ~/.crc/machines/crc/id_ecdsa core@"192.168.130.11"
 ```
 
+## Install pre-requisites
+
+To use MetricsStorage storage, the cluster-observability-operator is required.
+Use the following playbook to install it:
+
+```bash
+ansible-playbook ci/create-coo-subscription-playbook.yaml
+```
+
 ## License
 
 ```text

ci/create-coo-subscription-playbook.yaml

@@ -4,8 +4,8 @@
   hosts: "{{ cifmw_target_hook_host | default('localhost')  }}"
   gather_facts: false
   environment:
-    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
-    PATH: "{{ cifmw_path }}"
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig | default(ansible_env.HOME + '/.kube.config' ) }}"
+    PATH: "{{ cifmw_path | default(ansible_env.PATH) }}"
   tasks:
     - name: Import tasks for creating COO subscription
       ansible.builtin.include_tasks: "create-coo-subscription.yaml"