chore: Switch secret-operator volume to ephemeral (#794)

Author: sbernauer

tests/templates/kuttl/openldap-user-info/10-install-openldap.yaml

@@ -91,15 +91,23 @@ commands:
                   tcpSocket:
                     port: 1389
             volumes:
-              - name: tls
-                csi:
-                  driver: secrets.stackable.tech
-                  volumeAttributes:
-                    secrets.stackable.tech/class: ldap-tls-test-$NAMESPACE
-                    secrets.stackable.tech/scope: pod
               - name: ldif-data
                 configMap:
                   name: openldap-ldif-data
+              - name: tls
+                ephemeral:
+                  volumeClaimTemplate:
+                    metadata:
+                      annotations:
+                        secrets.stackable.tech/class: ldap-tls-test-$NAMESPACE
+                        secrets.stackable.tech/scope: pod
+                    spec:
+                      storageClassName: secrets.stackable.tech
+                      accessModes:
+                        - ReadWriteOnce
+                      resources:
+                        requests:
+                          storage: "1"
 
       ---
       apiVersion: v1