Making powervc-certificate optional

Signed-off-by: ira-pandey1 <ira.pandey1@ibm.com>

Author: irapandey

playbooks/roles/ocp-csi-driver/README.md

@@ -15,8 +15,9 @@ Requirements
 
 - Running OCP 4.x cluster is needed.
 - Cluster must not contain default StorageClass.
-- A secret with PowerVC certificate in the `default` namespace.
-  Secret name must be `powervc-certificate` and must contains `certificate` field.
+- Optional : 
+- A secret with PowerVC certificate in the `default` namespace 
+  Secret name should be `powervc-certificate` and must contains `certificate` field.
   eg. 
 
   ```

playbooks/roles/ocp-csi-driver/tasks/main.yml

@@ -117,17 +117,22 @@
       name: powervc-certificate
       namespace: default
     register: powervc_certificate
+    ignore_errors: yes
 
-  - name: Fail if the powervc-certificate does not exists in default namespace
-    fail:
+  - name: If the powervc-certificate does not exists in default namespace
+    debug:
       msg: "PowerVC certificate secret is not present!"
     when: powervc_certificate.resources | length == 0
 
-  - fail:
+  - name: Debug if the PowerVC certificate is empty or missing
+    debug:
       msg: "PowerVC certificate is empty! Please check the certificate's secret."
-    when: >
-          (powervc_certificate.resources[0].data.certificate is not defined) or
-          (powervc_certificate.resources[0].data.certificate | length == 0)
+    when: 
+      powervc_certificate.resources | length != 0 and
+      (
+      powervc_certificate.resources[0].data.certificate is not defined or
+      powervc_certificate.resources[0].data.certificate | length == 0
+      )
 
   - name: Create namespace for CSI driver validation
     k8s: