add ca secret ref

playbooks/roles/deploy-logging/files/loki-stack.yml

@@ -13,6 +13,8 @@ spec:
       name: logging-loki-storage
       type: s3 
       credentialMode: static
+    tls:
+      caName: openshift-service-ca.crt
   storageClassName: ocs-external-storagecluster-ceph-rbd
   tenants:
     mode: openshift-logging